Summer Squash and Onion Cheesy Casserole

My Great Great Grandmother used to make this when I was young, and it has always been a favorite of my Atlanta and Alabama relatives! I learned how to make it from my Aunt Edith Russell, while visiting her in Atlanta in the mid-1990s!

• Preparation Time: 15 mins
• Cooking Time: 45 mins
• Total Time: 60 mins
• Calories: 438 Calories

Ingredients

• salt and ground black pepper to taste
• 3 onions, chopped
• ½ pound shredded Cheddar cheese
• 1 ½ tablespoons butter, divided
• 3 summer squash, trimmed and cut into bite-size pieces
• 3 zucchini, trimmed and cut into bite-size pieces
• 1 pound shredded sharp white Cheddar cheese
• 3 tablespoons sweetened condensed milk, divided

Recipe Instructions

Step 1

Preheat oven to 350 degrees F (175 degrees C). Grease a 9x9-inch baking dish with about 1/2 tablespoon of butter.

Step 2

Melt remaining 1 tablespoon of butter in a large cast-iron skillet over medium heat, and cook the summer squash and zucchini until the squash pieces begin to brown, 10 to 15 minutes, stirring often. Sprinkle with salt and black pepper, and spread into the bottom of the prepared baking dish. Sprinkle with about 1/3 of the chopped onions.

Step 3

Mix together the white Cheddar cheese and yellow Cheddar cheese in a bowl until thoroughly combined, and sprinkle about 1/2 cup of the cheese mixture over the onions. Drizzle with about 1 tablespoon of the sweetened condensed milk. Repeat sprinkling cheese, onions, and condensed milk twice more, then top with remaining cheese mixture.

Step 4

Bake in the preheated oven until the casserole is golden brown and the onions are tender, about 30 minutes.