How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for Tex-Mex Squash and Chicken Casserole?

You need 13 ingredients. The key ingredients include: 1 (10 ounce) package frozen chopped spinach, thawed and well drained, 3 medium yellow squash, thinly sliced, 1 large red bell pepper, cut into 1/2 inch pieces, 1 yellow onion, thinly sliced, and more.

Is Tex-Mex Squash and Chicken Casserole suitable as meat & poultry?

Yes, Tex-Mex Squash and Chicken Casserole falls under the Meat & Poultry category and is a great choice for this type of meal.

How do I store leftover Tex-Mex Squash and Chicken Casserole?

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

Tex-Mex Squash and Chicken Casserole Recipe

Name: Tex-Mex Squash and Chicken Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1 (10 ounce) package frozen chopped spinach, thawed and well drained; 3 medium yellow squash, thinly sliced; 1 large red bell pepper, cut into 1/2 inch pieces; 1 yellow onion, thinly sliced; 2 tablespoons peanut oil; 3 cups cooked shredded chicken or 3 cups turkey; 12 6-inch corn tortillas, cut into 1 inch pieces; 1 can cream of celery soup, undiluted; 1 (8 ounce) container sour cream; 1 (8 ounce) jar picante sauce; 1 (4 1/2 ounce) canchopped green chilies, undrained; 1 (1 1/2 ounce) packet fajita seasoning mix; 2 cups shredded sharp cheddar cheese, divided.

Try this homemade Tex-Mex Squash and Chicken Casserole recipe the whole family will love. Made with yellow squash, red bell pepper, yellow onion and pea…

This Tex-Mex Squash and Chicken Casserole relies on simple, everyday ingredients such as yellow onion, thinly sliced, peanut oil and (8 ounce) jar picante sauce. It comes together quickly and makes 4 servings, at about 912 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

It's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.

Updated Jun 30, 2026

Serves 4 Meat & Poultry

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Coconut cream is a reliable plant-based alternative to dairy cream.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

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Tex-Mex Squash and Chicken Casserole

Tips for the best results

Variations & substitutions

My Personal Notes

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Frequently Asked Questions