Prepare to be amazed by a culinary creation that has captured hearts, including that of Hollywood icon Gwyneth Paltrow! This sensational Sweet Potato Crust Quiche is not just a meal; it’s a testament to healthy, delicious eating. We were absolutely thrilled when Gwyneth herself shared her love for this very recipe on Instagram, highlighting its incredible flavor and unique crust. Her enthusiastic endorsement solidified this dish as a true star, and we proudly dub it “Gwyneth’s Quiche”!
What makes this quiche truly stand out? The secret lies in its innovative crust. Forget traditional flour-based pastry; our recipe features a remarkable crust made entirely from shredded sweet potatoes and a touch of almond flour. This ingenious combination results in a crust that is not only naturally flourless but also wonderfully flavorful and tender. Imagine the comforting crispiness of sweet potato hash browns elegantly transformed into the sturdy, savory base for a rich and creamy quiche. It’s a game-changer for anyone seeking a healthier, gluten-free alternative without compromising on taste or texture.
Why This Sweet Potato Crust Quiche Will Become Your New Favorite
Beyond its celebrity approval, there are numerous compelling reasons why this sweet potato quiche deserves a permanent spot in your recipe rotation. It’s more than just a delicious dish; it’s a smart choice for a balanced lifestyle.
- Unbelievably Healthy: This quiche is a powerhouse of nutrition. Crafted primarily from wholesome eggs and an abundance of fresh vegetables, it delivers a high-protein punch and essential nutrients in every bite. It’s a fantastic way to start your day or fuel your body throughout.
- Naturally Gluten-Free & Grain-Free: For those with dietary sensitivities or anyone looking to reduce grain intake, this recipe is a dream come true. The crust, ingeniously made from grated sweet potatoes and finely ground almond flour, offers a robust and flavorful foundation that’s completely free of gluten and grains.
- Veggie-Packed Goodness: Prepare for a vegetable fiesta! Not only is the crust itself a magnificent serving of sweet potato, but the quiche filling is also generously loaded with even more nutritious goodness. We’ve included a medley of colorful peppers, savory caramelized onions, and tender spinach, making it an excellent way to incorporate more greens into your diet.
- The Ultimate Brunch Showstopper: Elevate your brunch game with this impressive yet easy-to-make quiche. Its vibrant appearance, delightful flavors, and wholesome ingredients make it the perfect centerpiece for any gathering, sure to impress family and friends alike.
- Simple to Prepare: Despite its gourmet appeal, this recipe is surprisingly straightforward. With clear steps and common ingredients, even novice cooks can achieve a professional-looking and tasting quiche.
Essential Ingredients for Your Grain-Free Sweet Potato Quiche
Crafting this incredible quiche requires a selection of fresh, high-quality ingredients. Here’s a detailed look at what you’ll need for both the innovative crust and the flavorful filling.
For the Irresistible Sweet Potato Crust:
- Grated Sweet Potato: This is the star of our flourless crust. Using a simple cheese grater will quickly transform whole sweet potatoes into fine shreds that bind together beautifully. It provides a naturally sweet, earthy base that complements the savory filling.
- Egg: A single large egg acts as the crucial binder, ensuring the grated sweet potato and almond flour coalesce into a firm, cohesive crust that won’t crumble during baking or serving.
- Aromatic Spices: A blend of garlic powder, ground cloves, salt, and pepper infuses the crust with a warm, savory depth, enhancing the natural sweetness of the sweet potato and adding complexity to every bite.
- Almond Flour: To keep this crust truly grain-free and add a delicate, nutty flavor, we incorporate super-fine almond flour. It contributes to the crust’s texture, making it slightly crispier and more refined.
- Olive Oil: Used to grease the pan, ensuring the crust cooks perfectly and releases easily.
A Note on Cornmeal:
While the crust itself is grain-free, this recipe calls for a sprinkle of cornmeal on the pan. This is not for the crust itself but serves as an excellent non-stick agent, preventing the crust from adhering to your baking dish and adding a delightful subtle crunch. If you wish to make the entire dish 100% grain-free, simply substitute almond meal for the cornmeal when preparing your pan.
For the Rich and Flavorful Quiche Filling:
- Large Eggs: Eight large eggs form the creamy, protein-rich base of the quiche. They provide essential structure and a wonderfully tender texture when baked.
- Milk (Any Kind): A splash of milk, whether dairy or a non-dairy alternative, adds moisture and richness to the egg mixture, contributing to the quiche’s silky consistency.
- An Abundance of Veggies: This is where you can truly customize your quiche! Our preferred combination includes sweet and savory caramelized onions, fresh and nutrient-dense spinach, vibrant red pepper for color and a subtle crunch, and intensely flavored sun-dried tomatoes for a burst of umami. Feel free to experiment with your favorite seasonal vegetables.
- Creamy Goat Cheese: No quiche is complete without cheese! Tangy and creamy goat cheese crumbles melt beautifully into the egg custard, adding a sophisticated flavor profile that perfectly complements the vegetables and sweet potato crust.
Top Tips for Sweet Potato Crust Quiche Success
Achieving the perfect sweet potato crust quiche is simple with these expert tips, ensuring a consistently delicious result every time.
Mastering Moisture for a Firm Crust: This is arguably the most crucial step for a successful sweet potato crust. Sweet potatoes naturally hold a lot of water. For your crust to firm up and become delightfully crispy, it is essential to extract as much moisture as possible from the grated sweet potatoes before mixing. After grating, sprinkle with salt and let them sit, then use a clean kitchen towel or several layers of paper towel to firmly squeeze and wring out the liquid. This prevents a soggy crust and ensures a sturdy base for your quiche.
The Magic of a Cheese Grater: Don’t overthink the grating process! A standard box cheese grater, using the large holes, works absolute wonders for shredding sweet potatoes efficiently and uniformly. It’s a simple tool that yields perfect results, creating the ideal texture for your crust mixture.
The Role of Cornmeal (or Almond Meal): You might notice us recommending a sprinkle of cornmeal on your cast iron skillet. This serves a dual purpose:
- Effortless Release: The cornmeal creates a barrier between the crust and the pan, ensuring your beautiful quiche easily slides out without any sticking. This makes serving and cleanup a breeze.
- Enhanced Texture and Flavor: Beyond its non-stick properties, cornmeal adds a subtle, pleasant crunch to the bottom of the crust, along with a delicate flavor note that complements the sweet potato.
- Grain-Free Alternative: If you’re committed to a completely grain-free diet, simply swap the cornmeal for an equal amount of almond meal. It will provide a similar non-stick effect and a slightly nutty flavor without any grains.
Storage Solutions
Once your delectable sweet potato crust quiche has fully cooled, cover it tightly with tin foil or transfer it to an airtight container. It will keep beautifully in the refrigerator for up to 3-5 days, making it an excellent option for meal prep or enjoying leftovers throughout the week.
Can You Freeze Sweet Potato Crust Quiche?
While we love this quiche fresh or refrigerated, we generally do not recommend freezing it. The unique texture of the sweet potato crust and the creamy egg filling can change significantly upon freezing and thawing, potentially becoming watery or losing its desired consistency. For the best experience, enjoy it within a few days of baking!
Discover More of Our Favorite…
Egg-Cellent Recipes
If you’re a fan of egg-based dishes and healthy, easy meals, explore these other fantastic recipes:
- Hearty Veggie Frittata
- Fluffy Scrambled Eggs
- Classic Spinach Quiche
- Convenient Instant Pot Egg Bites
- Savory Bagel Ham and Cheese Quiche
Sweet Potato Crust Quiche Recipe
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Ingredients
Crust
- 1 tablespoon olive oil
- 1 tablespoon cornmeal*
- 2.5 cups grated sweet potato, moisture removed and packed (~1 large sweet potato*)
- 1 teaspoon salt, separated
- 1 large egg
- 1 tablespoon garlic powder
- 1/4 teaspoon ground cloves
- 1/8 teaspoon ground pepper
- 3/4 cup super-fine almond flour
Quiche Filling
- 8 large eggs
- 1/4 cup milk, any kind
- 1/2 teaspoon sea salt
- 1 large white onion, caramelized**
- 2 cups fresh spinach, packed
- 1 red pepper, chopped
- 1/4 cup sun-dried tomatoes
- 2 oz. goat cheese crumbles
Instructions
Preparing the Crust
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Preheat your oven to 425ºF (220ºC). Lightly grease a 9-inch circular baking pan (a cast iron skillet with a depth of about 2.5 inches works wonderfully) with olive oil. Sprinkle the bottom and sides evenly with cornmeal (or almond meal for a fully grain-free option) to prevent sticking. Set the prepared pan aside.
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Begin by peeling your sweet potato. Using the large holes of a cheese grater, carefully grate the entire sweet potato into fine shreds.
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Transfer the grated sweet potato to a medium-sized bowl. Sprinkle it with 1/2 teaspoon of salt and gently toss to combine. Let it sit for 15-20 minutes; this crucial step helps to draw out excess moisture from the sweet potato.
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After the resting period, place the grated sweet potato onto two or three layers of paper towels or a clean kitchen towel. Firmly twist and squeeze to wring out as much moisture as possible. The drier the sweet potato, the crispier your crust will be. Note that the moisture content can vary between sweet potatoes.
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Return the squeezed sweet potato to the medium-sized bowl. Add the remaining salt, the large egg, garlic powder, ground cloves, ground pepper, and super-fine almond flour. Use your hands to thoroughly mix all the ingredients until they are well combined and form a cohesive mixture.
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Press the sweet potato mixture evenly into the prepared pie pan. Use your hands to flatten and shape it into a crust, ensuring it covers the bottom and extends halfway up the sides of the pan. Aim for a crust thickness of approximately 1/2 to 3/4 inches.
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Bake the sweet potato crust in the preheated oven at 425ºF (220ºC) for 20 minutes, or until lightly golden and set.
Assembling and Baking the Quiche
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Remove the pre-baked crust from the oven and allow it to cool slightly while you prepare the filling.
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While the crust cools, prepare all your vegetables. Measure out 2 cups of packed fresh spinach, ensure your large white onion is caramelized, and chop the red pepper. Set all prepared vegetables aside.
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In a medium-sized bowl, crack the 8 large eggs. Add the 1/4 cup of milk and 1/2 teaspoon of sea salt. Whisk vigorously until the eggs are well scrambled and combined with the milk.
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Evenly layer the caramelized onion, fresh spinach, and chopped red pepper into the bottom of the sweet potato crust. Then, carefully pour the whisked egg mixture over the vegetables. Use your hands or a spatula to gently submerge the vegetables in the egg custard, ensuring they are evenly distributed.
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Finally, scatter the sun-dried tomatoes and goat cheese crumbles over the top of the egg and vegetable mixture.
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Cover the quiche loosely with tin foil and bake for 20 minutes at 425ºF (220ºC). After 20 minutes, carefully remove the tin foil and continue baking for an additional 10-15 minutes, or until the center is set and the top is lightly golden. A knife inserted into the center should come out clean.
Helpful Tips & Notes
- To ensure this recipe is 100% grain-free, you can substitute almond meal for the cornmeal when preparing your baking pan.
- The provided nutrition information includes an additional 4 tablespoons of olive oil, accounting for the caramelization process of the onions. For detailed instructions on how to perfectly caramelize onions, please refer to THIS recipe.
- While we used a 9-inch pan for this recipe, a 10-inch pan can also be used. If opting for a larger pan, you will need to add 2 extra large eggs to ensure adequate coverage of the vegetables and a sufficiently full quiche.
- Experiment with other vegetables! Asparagus, mushrooms, or even chopped broccoli florets make excellent additions or substitutions.
- Try different cheeses like feta, sharp cheddar, or Gruyère for a varied flavor profile.
Watch It Come Together
Sweet Potato Crust Quiche: Breakfast is served with this delicious, gluten-free quiche! That’s right, this sweet potato crust quiche is gluten and grain-free, making this vegetarian breakfast protein and veggie-packed. The crust is made with grated sweet potato and almond flour – you’ll never go back to the classic quiche crust again!
Nutrition
Carbohydrates: 20 g,
Protein: 16 g,
Fat: 25 g,
Fiber: 4 g,
Sugar: 6 g
Nutrition information is automatically calculated, so should only be used as an approximation.
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