Dump-and-Bake Chicken Pesto Orzo for Busy Weeknights

This chicken pesto orzo is a comforting, creamy weeknight casserole that requires almost no hands-on time. Everything goes into a single 9 x 13-inch dish: raw chicken, dry orzo, pesto, sun-dried tomatoes, frozen peas, and a whole puck of Boursin cheese. The oven cooks the ingredients together, the cheese melts into the broth, and you get a bright, savory one-dish meal with minimal fuss.

Why You’ll Love This Dump-And-Bake Dinner

• Truly dump-and-bake: No searing, sautéing, or pre-boiling. Add the ingredients raw, cover, and let the oven do the work.
• Minimal cleanup: Everything cooks in one casserole dish, so you only have one pan to wash.
• Pesto-forward flavor: Pesto and Boursin combine with sun-dried tomatoes and garlic for a bright, savory sauce.
• All-in-one meal: Protein, pasta, and vegetables are all included — a satisfying family dinner with little effort.

Featured Ingredients

• Chicken breast: Cut into even 1 to 1½-inch pieces so it cooks uniformly throughout the bake.
• Dry orzo: Goes into the dish straight from the package and absorbs the seasoned broth as it bakes.
• Pesto: Use store-bought for convenience or your favorite homemade pesto for extra freshness.
• Sun-dried tomatoes: Oil-packed varieties add concentrated sweetness and a pleasant, tangy depth.
• Frozen peas: Added frozen, they thaw and cook in the casserole without extra prep.
• Boursin cheese: A whole puck melts into the casserole, creating a silky, herbaceous finish when stirred in at the end.

How The Dump-And-Bake Method Works

This technique relies on a tightly sealed casserole to trap steam so the dry orzo and raw chicken cook together. While the dish bakes, the orzo absorbs the chicken broth and releases starch, creating a base for the sauce. After baking, a 10-minute uncovered rest allows the pasta to soak up any remaining liquid. Finally, stirring in the softened Boursin transforms the starchy cooking liquid and pesto into a creamy, cohesive sauce without using an extra pot.

My Top Tips

• Uniform chicken pieces: Cut the chicken into consistent 1 to 1½-inch cubes so pieces finish cooking at the same time.
• Make sure the orzo is submerged: Stir well so the pasta sits in the broth rather than piled above it; this helps even cooking.
• Seal the dish tightly: Crimp foil firmly around the pan to keep steam inside; trapped steam is what cooks the orzo.
• Check for doneness: The orzo should be tender and the chicken should reach 165ºF. If needed, return to the oven for short increments.
• Don’t skip the rest: Letting the casserole sit uncovered for 10 minutes lets the orzo thicken the sauce before you stir in the cheese.

Easy Swaps

You can use any Boursin flavor you prefer; Garlic & Fine Herbs complements the pesto best. Boneless, skinless chicken thighs may substitute for breasts — just cut them evenly and verify they reach the safe internal temperature. I don’t recommend switching the orzo to a different pasta without testing, because other shapes absorb liquid differently and could require adjustments to the broth amount and baking time.

What To Serve With Chicken Pesto Orzo

This casserole functions as a complete meal, but you can serve a simple green salad or crusty rolls on the side to stretch it for guests or to add extra vegetables and crunch. A light side salad with a tangy vinaigrette pairs particularly well with the rich pesto sauce.

Storage And Reheating

Store leftovers in an airtight container in the refrigerator for up to three days. Because orzo continues to absorb sauce, add a splash of chicken broth or water before reheating to loosen the texture. Reheat gently in the microwave or on the stovetop until warmed through.

Frequently Asked Questions