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 Hearty Tex Mex Squash Chicken Casserole?

You need 13 ingredients. The key ingredients include: 1 -10 ounce frozen chopped spinach, thawed, 3 medium squash (or mix) or 3 medium zucchini, sliced and quartered (or mix), 1 large green bell pepper, finely chopped, 1 medium onion, finely chopped, and more.

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

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

How do I store leftover Hearty Tex Mex Squash Chicken Casserole?

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

Hearty Tex Mex Squash Chicken Casserole Recipe

Name: Hearty Tex Mex Squash Chicken Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1 -10 ounce frozen chopped spinach, thawed; 3 medium squash (or mix) or 3 medium zucchini, sliced and quartered (or mix); 1 large green bell pepper, finely chopped; 1 medium onion, finely chopped; 2 tablespoons vegetable oil; 3 cups shredded cooked chicken (grocery rotis. works well); 12 corn tortillas, cut into 1-inch pieces; 1 (10 3/4 ounce) can cream of celery soup; 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) envelope fajita seasoning mix; 2 cups shredded sharp cheddar cheese, divided

Try this homemade Hearty Tex Mex Squash Chicken Casserole recipe the whole family will love. Made with zucchini, green bell pepper, onion and vegetable …

This Hearty Tex Mex Squash Chicken Casserole relies on simple, everyday ingredients such as medium onion, finely chopped, vegetable oil and (8 ounce) jar picante sauce. It comes together quickly and makes 4 servings, at about 932 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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Hearty Tex Mex Squash Chicken Casserole

Tips for the best results

Variations & substitutions

My Personal Notes

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Frequently Asked Questions