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Top-down view of a cheesy Tex-Mex zucchini corn casserole with cilantro garnish.

Tex-Mex Corn Zucchini Casserole

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Prep Time 15 minutes
Cook Time 25 minutes
Servings: 6
Course: Main Course, Side Dish
Cuisine: fusion, Mediterranean
Calories: 195
Ingredients Method Notes

Ingredients
  

  • 3 medium zucchinis sliced into half-moons
  • 2 cups sweet corn fresh or frozen
  • 1 red bell pepper diced
  • 1 small red onion finely chopped
  • 4 cloves garlic minced
  • 2 tbsp extra virgin olive oil
  • 1 tsp ground cumin
  • 1 tsp chili powder
  • 1/2 tsp sea salt
  • 1/2 cup crumbled feta or light mozzarella
  • 1/4 cup fresh cilantro chopped

Method
 

  1. Preheat oven to 375°F (190°C).
  2. Sauté: Heat olive oil in a large skillet. Add onion and bell pepper; cook for 5 minutes.
  3. Aromatics: Stir in garlic, cumin, chili powder, and salt. Cook for 1 minute.
  4. Veggies: Add zucchini and corn. Sauté for 3–4 minutes until just starting to soften.
  5. Bake: Transfer to a 9x13 baking dish. Sprinkle with cheese.
  6. Finish: Bake for 20–25 minutes. Garnish with cilantro before serving.

Notes

1. Moisture Control To prevent a watery casserole, sauté the zucchini until just tender-crisp. If using frozen corn, thaw and pat thoroughly dry before adding to the pan.
2. Cheese Swaps For a sharp Mediterranean profile, use Feta. For a classic Tex-Mex stretch, use Pepper Jack or Low-Moisture Mozzarella.
3. Texture Tip Do not over-process the vegetables. Hand-slicing the zucchini into 1/4-inch half-moons ensures they maintain their bite after baking.
4. Storage Hack This dish is best fresh. If reheating, use an oven or air fryer at 350°F to crisp the edges; the microwave tends to make the zucchini soft.
5. Prep Ahead You can chop all vegetables and store them in airtight containers up to 24 hours in advance for a 5-minute assembly on the day of cooking.