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Easy Overnight Italian Breakfast Casserole

This Easy Overnight Italian Breakfast Casserole is a deliciously simple way to start your day!
Prep Time20 minutes
Cook Time50 minutes
Total Time1 hour 10 minutes
Course: Breakfast, Brunch
Cuisine: Italian
Keyword: Easy, Make Ahead, Savory
Servings: 8 servings

Ingredients

  • 1 tablespoon olive oil or cooking spray for greasing
  • 1 pound uncooked Italian sausage casings removed
  • 1 teaspoon Italian seasoning
  • 1 teaspoon fresh rosemary finely chopped
  • 1 small onion diced
  • 2 count red bell peppers seeds removed and diced
  • 2 cups fresh spinach
  • 2 cloves garlic minced
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper
  • 12 count large eggs
  • 1/2 cup full-fat milk
  • 1/3 cup ricotta cheese
  • 1/3 cup finely grated Parmesan cheese

Instructions

  • Preheat your oven to 350°F (175°C). Grease the 9x13-inch baking dish with olive oil or cooking spray.
  • Add the Italian sausage to a large skillet over medium heat. Break it apart with a spatula as it cooks, browning evenly for about 5 minutes.
  • Stir in the diced onion, red bell peppers, and minced garlic. Cook for an additional 3-4 minutes until the vegetables are tender. Add the spinach, Italian seasoning, fresh rosemary, salt, and black pepper. Cook until the spinach is wilted, then remove from heat.
  • In a mixing bowl, whisk together the eggs, milk, ricotta cheese, and half of the Parmesan cheese until smooth.
  • Fold the cooked sausage and vegetable mixture into the egg mixture, ensuring everything is evenly distributed.
  • Pour the entire mixture into the prepared baking dish, spreading it out evenly. Top with the remaining Parmesan cheese.
  • Cover the casserole and refrigerate overnight.
  • Remove the casserole from the refrigerator and let it sit at room temperature for about 20 minutes. Then, bake for 45-50 minutes or until the top is golden brown and the center is set.
  • Let the casserole cool for a few minutes before slicing. Serve warm garnished with fresh herbs or additional cheese if desired.

Equipment

  • 9x13-inch Baking Dish
  • Large Skillet
  • Mixing Bowl
  • Whisk
  • Spatula

Notes

  • Customize with seasonal vegetables like zucchini or mushrooms.
  • For extra creaminess, top with avocado slices after baking.
  • Store leftovers in an airtight container for up to 3 days.