Timeless Chicken and Vegetable Casserole with Herb Crust

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

A nostalgic baked casserole with tender chicken, seasonal veggies, and a golden herb-crusted topping. This american-inspired one pot ready in about 45 minutes pairs chicken breasts, frozen mixed vegetables, all-purpose flour for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 310 calories and feeds 6, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 20 min Cook: 25 min Serves 6 American cuisine 310 cal/serving
Build a week of meals around this recipe → Shop this recipe on Instacart → Shop equipment ↓

Ingredients

Equipment for this recipe

Top-rated tools to make this recipe successfully.

More Bakeware & baking tools → Shop all kitchen tools →

Instructions

  1. Step 1: Preheat oven to 375°F (190°C). Butter a 9x13-inch baking dish.
  2. Step 2: In a medium saucepan, melt 1 tablespoon butter over medium heat. Whisk in 1/2 cup all-purpose flour and cook for 1 minute until bubbly.
  3. Step 3: Gradually whisk in 1 cup milk, cooking until the sauce thickens and coats the back of a spoon (about 3-4 minutes).
  4. Step 4: Stir in 2 cups frozen mixed vegetables and 1.5 pounds diced cooked chicken, then season with 1/2 teaspoon dried thyme, 1/4 teaspoon salt, and 1/4 teaspoon black pepper.
  5. Step 5: Transfer mixture to the prepared baking dish, smoothing the top.
  6. Step 6: Mix 1/4 cup breadcrumbs with 1/2 teaspoon dried thyme, 1/4 teaspoon salt, and 1/4 teaspoon black pepper, then sprinkle over casserole.
  7. Step 7: Bake for 25 minutes until golden brown and bubbling around the edges.

Frequently asked questions

How long does Timeless Chicken and Vegetable Casserole with Herb Crust take to make?

Total time is about 45 minutes (20 min prep + 25 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Timeless Chicken and Vegetable Casserole with Herb Crust?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep chicken breasts from drying out.

Can I substitute ingredients in Timeless Chicken and Vegetable Casserole with Herb Crust?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Timeless Chicken and Vegetable Casserole with Herb Crust for a different number of people?

The recipe is written for 6 servings. Multiply each ingredient by (your serving target / 6). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with Timeless Chicken and Vegetable Casserole with Herb Crust?

American one pot like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

What others are saying

Related recipes