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Easy Overnight Hashbrown Breakfast Casserole

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A cozy and comforting breakfast casserole made with hashbrowns soaked overnight in a creamy, cheesy custard, perfect for busy mornings or relaxed weekend brunches.

Ingredients

Scale
  • 30 oz frozen shredded hashbrowns (thawed and squeezed to remove moisture)
  • 6 large eggs (room temperature)
  • 2 cups whole milk
  • 1 cup sour cream
  • 2 cups shredded cheese (sharp cheddar and Monterey Jack blend)
  • 1 cup diced cooked bacon or sausage (optional)
  • 1/2 cup chopped onions
  • 1 tsp salt
  • 1/2 tsp black pepper
  • 1/2 tsp garlic powder
  • 2 tbsp fresh chives or green onions (optional, for garnish)

Instructions

  1. Thaw and drain the hashbrowns by running cold water over them and squeezing out excess moisture with a towel (about 10 minutes).
  2. Preheat oven to 350°F (175°C).
  3. Cook bacon or sausage if using, chop into bite-size pieces, and drain on paper towels (about 10 minutes).
  4. Sauté chopped onions in the same skillet until translucent and slightly caramelized, about 5 minutes.
  5. In a large bowl, whisk together eggs, milk, sour cream, salt, pepper, and garlic powder until smooth and creamy.
  6. Add drained hashbrowns, cooked bacon or sausage, sautéed onions, and shredded cheese to the custard mixture. Stir gently but thoroughly to combine.
  7. Lightly grease a 9×13-inch baking dish and spread the mixture evenly. Cover tightly with plastic wrap or foil.
  8. Refrigerate overnight for at least 8 hours to allow flavors to meld and hashbrowns to soak up the custard.
  9. Remove casserole from fridge and let sit at room temperature for 15 minutes while oven preheats to 350°F (175°C).
  10. Bake uncovered for 55-65 minutes until the top is golden brown and the center is set (a knife inserted should come out clean).
  11. Sprinkle fresh chives or green onions on top before slicing. Let cool for 5 minutes before serving.

Notes

Drain hashbrowns thoroughly to avoid sogginess. Let casserole sit at room temperature before baking for even cooking. For crispier edges, bake uncovered or broil for last 2-3 minutes. Variations include swapping bacon for vegetables for vegetarian option or using dairy-free substitutes.

Nutrition

Keywords: overnight casserole, hashbrown casserole, breakfast casserole, easy breakfast, brunch recipe, make ahead breakfast, cheesy casserole

Find it online: https://evabakery.com/easy-overnight-hashbrown-breakfast-casserole-recipe-for-perfect-morning-meals/