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Cheesy Squash and Onion Casserole

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PREP TIME
15 min
COOKING TIME
45 min
TOTAL TIME
60 min
SERVINGS
8 servings
Dinner Southern
Cheesy Squash and Onion Casserole
Ingredients
  • 1 1/2 tablespoons butter, divided
  • 3 summer squash, trimmed and cut into bite-size pieces
  • 3 zucchini, trimmed and cut into bite-size pieces
  • salt and ground black pepper to taste
  • 3 onions, chopped
  • 1 pound shredded sharp white Cheddar cheese
  • 1/2 pound shredded Cheddar cheese
  • 3 tablespoons sweetened condensed milk, divided
Instructions
1
Preheat your oven to the ideal temperature of 350 degrees Fahrenheit (175 degrees Celsius).
2
Next, take a moment to prepare your baking dish by coating it with approximately half a tablespoon of butter.
3
Melt the remaining one tablespoon of butter in a large cast-iron skillet over medium heat, and cook the summer squash and zucchini until they start to develop a rich brown color, taking around 10 to 15 minutes and stirring frequently.
4
Add a pinch of salt and black pepper to the squash mixture, then spread it evenly at the bottom of your prepared baking dish.
5
Throughly combine the white Cheddar cheese and yellow Cheddar cheese in a bowl until they form a seamless blend, and sprinkle roughly half a cup of the cheese mixture over the onions.
6
Drizzle about one tablespoon of sweetened condensed milk over the cheese, and then repeat this process two more times before topping it all off with the remaining cheese mixture.
7
Place your casserole in the preheated oven and bake until it reaches a golden brown hue and the onions are tender, taking approximately 30 minutes.