Easy Make-Ahead Breakfast Casserole

Name: Easy Make-Ahead Breakfast Casserole
Prep time: 20 min
Cook time: 45 min
Total time: 1 h 5 min
Cuisine: American
Ingredients: 4 cups (175g or 6 oz) cubes of crusty bread*; 1 teaspoon olive oil; 1 pound ground pork sausage, casings removed*; 1 teaspoon dried rosemary or Italian seasoning, optional; 3/4 cup (100g) chopped yellow onion (1/2 of a large onion); 2 garlic cloves, minced; 2 cups (275g or 9-10 oz) chopped bell peppers; 1 cup (100g or 3 oz) sliced mushrooms; 1 cup roughly chopped fresh spinach; 12 large eggs; 1/4 teaspoon salt; 1/8 teaspoon freshly ground black pepper; 2/3 cup (160ml) milk or half-and-half*; 1 cup (100g or 3.5 oz.) shredded cheddar cheese; optional garnish: green onion and/or chopped parsley

Instructions

Prep:20minCook:45min

This easy breakfast casserole is infinitely adaptable and you can find variations and suggestions in the recipe Notes below. The version written below with sausage, mushrooms, bell peppers, spinach, and cheddar cheese is generally the most popular with guests. You can assemble the entire dish and refrigerate for up to 24 hours before baking.

Updated at: Sat, 29 Mar 2025 01:53:48 GMT