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Cheesy Squash Casserole Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 3.9 from 56 reviews
  • Author: Mary
  • Prep Time: 15 minutes
  • Cook Time: 40-50 minutes
  • Total Time: 55 minutes
  • Yield: 10 servings 1x
  • Category: Casserole
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Description

Cheesy Squash Casserole is a comforting baked dish featuring tender squash, bell pepper, and onion mixed with a creamy, cheesy egg custard. Perfect as a hearty side or light main, this casserole combines the natural sweetness of vegetables with the richness of Monterey Jack and cheddar cheeses for a deliciously satisfying meal.


Ingredients

Scale

Vegetables

  • 5 medium squash, diced
  • 1 bell pepper, chopped
  • 1 onion, sliced

Wet Ingredients

  • 2 Tbsp butter
  • ½ cup milk
  • 4 large eggs

Dry Ingredients

  • 2 Tbsp all-purpose flour
  • 2 tsp baking powder
  • 1 tsp salt (or to taste)

Cheeses

  • 3 cups shredded Monterey Jack cheese
  • 1 cup shredded cheddar cheese


Instructions

  1. Preheat Oven and Prepare Pan: Preheat your oven to 325ºF. Lightly spray a 9×13-inch baking dish with cooking spray to prevent sticking.
  2. Sauté Vegetables: Melt the butter in a large skillet over medium-high heat. Add the diced squash, chopped bell pepper, and sliced onion. Cook until the vegetables are softened, then transfer them to a strainer and press down gently to remove excess liquid.
  3. Make the Batter: In a large bowl, combine the all-purpose flour, baking powder, and salt. Whisk in the milk until the mixture is smooth. Then, whisk in the eggs thoroughly until well combined.
  4. Combine Ingredients: Stir the drained squash mixture and both cheeses—Monterey Jack and cheddar—into the batter until everything is evenly mixed.
  5. Bake the Casserole: Pour the mixture into the prepared baking dish. Bake uncovered for 40 to 50 minutes, or until a toothpick inserted into the center comes out clean, indicating the casserole is set and cooked through.

Notes

  • Pressing the vegetables to remove excess moisture is key to preventing a soggy casserole.
  • Feel free to adjust the cheese blend based on preference or what you have on hand.
  • The baking time may vary slightly depending on your oven; start checking at 40 minutes.
  • This casserole can be served warm or at room temperature and makes great leftovers.