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Easy Freezer-Friendly Breakfast Casserole Muffins: Best Make-Ahead Recipe

freezer-friendly breakfast casserole muffins - featured image

These Easy Freezer-Friendly Breakfast Casserole Muffins are a morning lifesaver—grab-and-go, cheesy, and fluffy, perfect for busy mornings. Make a big batch on Sunday and enjoy warm, satisfying breakfasts for weeks.

Ingredients

Scale
  • 12 large eggs
  • 1/2 cup whole milk
  • 1 1/2 cups shredded cheddar cheese
  • 1 cup cooked breakfast sausage, crumbled
  • 1 cup frozen hash browns, thawed and squeezed dry
  • 1/2 cup finely diced bell pepper
  • 1/4 cup sliced green onions
  • 1/2 teaspoon fine sea salt
  • 1/4 teaspoon freshly ground black pepper
  • 1/4 teaspoon garlic powder

Instructions

  1. Preheat oven to 375°F (190°C). Generously grease a 12-cup muffin tin with cooking spray.
  2. In a medium skillet over medium heat, cook the breakfast sausage, breaking it up, until browned and cooked through (5-7 minutes). Add the diced bell pepper for the last 2 minutes. Remove from heat and let cool.
  3. Place thawed hash browns in a clean kitchen towel or paper towels and squeeze firmly to remove as much liquid as possible.
  4. In a large mixing bowl, whisk together eggs, milk, salt, pepper, and garlic powder for about 1 minute until frothy.
  5. Add the cooked sausage and bell pepper, squeezed hash browns, shredded cheddar, and sliced green onions to the egg mixture. Stir gently until evenly combined.
  6. Using a 1/4-cup measuring cup or large cookie scoop, divide the mixture evenly among the 12 greased muffin cups, filling almost to the top.
  7. Bake for 18-22 minutes, until set around the edges and centers are just slightly jiggly. A toothpick inserted should come out mostly clean.
  8. Let cool in the pan for 5 minutes, then run a knife around the edges to loosen. Transfer to a cooling rack to cool completely before freezing.

Notes

Don’t overcook the eggs; remove when centers are slightly jiggly. Squeeze hash browns well to remove moisture. Let muffins cool completely before freezing to prevent ice crystals. For best results, use freshly shredded cheese.

Nutrition

Keywords: breakfast casserole muffins, freezer-friendly breakfast, make-ahead breakfast, egg muffins, breakfast meal prep