Craving cozy without the heavy? This baked creamy garlic parmesan chicken & broccoli casserole tucks juicy chicken, whole-grain pasta, and bright broccoli into a silky garlic-Parmesan sauce, then bakes it under a golden, bubbly top. It’s make-ahead friendly, family-size, and exactly the kind of weeknight “set it and serve it” dinner that still tastes like a treat.

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🛒 Ingredients

• 12 oz whole-grain penne (or rotini)
• 1 ½ lbs boneless skinless chicken (breasts or thighs), cut in ¾-inch pieces
• 4 cups broccoli florets (lightly steamed or microwaved to crisp-tender)
• 2 tbsp olive oil, divided
• 3 tbsp unsalted butter
• 5 cloves garlic, finely minced
• 2 tbsp flour (optional for extra body)
• 1 ¾ cups low-sodium chicken broth
• 1 cup half-and-half (or ¾ cup 2% milk + ¼ cup light cream)
• 1 cup finely grated Parmesan, divided (¾ cup for sauce, ¼ cup for topping)
• 1 cup shredded mozzarella (or part-skim provolone)
• 1 tsp Italian seasoning
• ½ tsp onion powder
• ¼ tsp red pepper flakes (optional)
• Salt & black pepper, to taste
• Fresh parsley or basil, chopped, for garnish
• Lemon wedge, optional (a squeeze brightens everything)

Time saver: Steam broccoli while the pasta boils; the casserole comes together fast.

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👩‍🍳 Step-by-Step

1) Boil pasta
Bring a large pot of salted water to a boil. Cook pasta 2 minutes shy of al dente (it will finish in the oven). Drain; toss with a drizzle of olive oil to prevent sticking.

2) Sear the chicken
Pat chicken dry; season with salt, pepper, and Italian seasoning. Heat 1 tbsp olive oil in a large skillet over medium-high. Sear until golden and just cooked through, 5–6 minutes. Transfer to a plate (keep juices).

3) Make the garlic-Parmesan sauce
Lower heat to medium. Add butter to the skillet; stir in garlic for 30–60 seconds until fragrant. Sprinkle in flour (if using) and cook 30 seconds. Whisk in chicken broth, scraping up browned bits, then half-and-half. Simmer 2–3 minutes to thicken slightly. Off heat, whisk in ¾ cup Parmesan until smooth. Season with onion powder, red pepper flakes (if using), salt, and pepper. Return to low heat if needed—keep it silky, not boiling.

4) Combine
In a large bowl (or the pasta pot), mix pasta + chicken (and juices) + broccoli. Pour over the sauce and toss until everything’s glossy and well-coated.

5) Assemble & bake
Spread into a lightly greased 9×13-inch baking dish. Top with mozzarella and the remaining ¼ cup Parmesan. Bake at 375°F (190°C) for 18–22 minutes, until bubbling at edges and lightly golden. For deeper color, broil 1–2 minutes—watch closely.

6) Finish & serve
Rest 5 minutes so the sauce settles. Add herbs and a small squeeze of lemon if you like. Scoop and serve warm.

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✅ Benefits (at a glance)

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🧄 Why This Bake Works

• Sear first for flavor. Browning chicken builds savory depth so the casserole doesn’t rely on heavy cream.
• Silky, not stodgy. A light garlic-Parmesan sauce, loosened with broth, stays creamy without being thick or gluey.
• Pasta timing matters. Slightly undercooked pasta finishes perfectly in the oven—no mush.
• Balanced cheese strategy. Parmesan in the sauce for savor; mozzarella on top for those golden, stretchy strings.

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🌿 Variations & Swaps

• Spinach Artichoke Twist: Fold in 1 cup chopped spinach + ½ cup chopped artichoke hearts.
• Extra Veg: Add sautéed mushrooms or roasted red peppers.
• Lighter Dairy: Use all 2% milk and skip flour for a thinner, ultra-light sauce.
• Gluten-Free: GF pasta + thicken with 1 tsp cornstarch slurry instead of flour.
• No Pasta Night: Swap in cooked brown rice or cauliflower rice (well drained) for a grain-free spin.

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🥗 What to Serve with It

• Simple green salad with lemon vinaigrette
• Garlic bread or toasted sourdough crumbs sprinkled over servings for crunch
• Roasted tomatoes for juicy acidity

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🔁 Make-Ahead, Storage & Reheat

• Make-Ahead: Assemble up to 24 hours ahead. Cover and refrigerate. Bake covered for 15 minutes, then uncover and bake until hot and bubbly (add 5–10 minutes total).
• Freeze (unbaked): Wrap tightly; freeze up to 2 months. Thaw overnight in fridge; bake as above.
• Fridge Leftovers: 3–4 days. Reheat covered at 325°F (165°C) with a splash of milk or broth.
• Portion Prep: Bake in two 8×8 dishes—eat one, chill/freeze the other.

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🛠️ Troubleshooting & Pro Tips

• Too thick? Stir in warm broth a splash at a time after baking.
• Too thin? Rest 5–10 minutes; pasta will absorb. Or broil briefly to reduce surface moisture.
• Pale top? Broil 60–90 seconds for color.
• Watery broccoli? Steam to crisp-tender and pat dry before mixing in.
• Grainy sauce? Add Parmesan off heat and whisk gently; avoid boiling after dairy goes in.

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❓FAQs (Quick Answers)

Can I use rotisserie chicken?
Yes—skip searing; fold 3 cups shredded rotisserie chicken into the sauce with the pasta and broccoli.

Best pasta shape?
Short shapes (penne, rotini, shells) hold the sauce and bake evenly.

Can I go all Parmesan on top?
Yes, but a bit of mozzarella/provolone gives you that gorgeous melt and stretch.

Is fresh broccoli required?
Frozen works! Thaw, drain well, and pat dry before mixing in.

How do I make it extra-golden?
Mix 1 tbsp olive oil with 2 tbsp panko + 1 tbsp grated Parm; sprinkle over the top before baking.

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🍽️ Related Recipes to Try Next

• 🔗 Low-Cal Creamy Parmesan Chicken with Zucchini Noodles — Lighter garlic-Parmesan chicken over zoodles.
• 🔗 Creamy Chicken Garlic Parmesan Pasta — Juicy seared chicken in a silky garlic-Parmesan sauce with pasta.

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📌 Pin & Share

“Golden, bubbly, and weeknight-easy—this baked creamy garlic parmesan chicken & broccoli casserole brings all the comfort with none of the fuss.”
Follow more easy casseroles and cozy dinners on Pinterest: @dishesmadeeasy

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