Cozy Morning Breakfast Casserole
A golden, comforting breakfast casserole built from fridge staples and freezer favorites — crisp at the edges, tender in the center, and smugly easy to pull off.
Ingredients
Main
- 1 tablespoon olive oil
- 1 small onion diced
- 1 cup frozen hash browns
- 1 cup cooked breakfast sausage or diced ham
- 1 cup shredded cheddar cheese
- 6 large eggs
- 1 cup milk
- 1 teaspoon Dijon mustard
- 1 teaspoon salt
- 1/2 teaspoon black pepper
- Optional: chopped spinach roasted red peppers, or scallions
Instructions
- Preheat oven to 375°F and grease an 8x10 baking dish.
- Warm olive oil in a skillet and sauté diced onion until softened.
- Scatter frozen hash browns into the prepared baking dish.
- Add cooked onions, sausage or ham, and half of the shredded cheese.
- Whisk eggs, milk, Dijon mustard, salt, and pepper together in a mixing bowl.
- Pour the egg mixture evenly over the casserole base.
- Top with the remaining cheese.
- Bake for 35–40 minutes until the center is set and the edges are golden.
- Let rest for 5–10 minutes before slicing and serving.
Notes
Swap proteins freely — bacon, chorizo, or leftover roasted vegetables all work. Use pre-diced frozen onions to skip sautéing entirely. For toddlers, cut into strips once cooled. Excellent cooled, sliced, and served with hot honey for apéro-style snacking.