The Ultimate Brunch Casserole

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This easy casserole combines spicy chorizo, sour cream, cheddar cheese, eggs, and frozen hash browns

By
Maren Ellingboe King
Maren Ellingboe King
Maren Ellingboe King

Maren Ellingboe King, an experienced food stylist and recipe developer with a passion for beautiful, delicious food, is the author of Fresh Midwest. She has been writing for over a decade and working in food photography for over five years.

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Published on April 8, 2024
A savory chorizo brunch casserole
Prep Time:
15 mins
Cook Time:
45 mins
Total Time:
1 hr
Servings:
8
Jump to Nutrition Facts

Is there anything better than a warm breakfast casserole on a leisurely weekend morning? Breakfast casseroles are my go-to solution for brunch entertaining, as they easily serve a crowd and can be assembled ahead of time. This recipe combines spicy chorizo, sour cream, cheddar cheese, eggs, and frozen hash browns for a creamy, decadent dish that’s sure to please adults and kids alike. Whisking in sour cream with the eggs adds richness, and makes for a silky-smooth texture. I love to serve it with sliced avocado, chopped green onions, and plenty of hot sauce, but it’s delicious straight out of the oven too!  

Try swapping the chorizo for hot or sweet Italian sausage for a different flavor profile, or use vegan chorizo for a vegetarian crew. When served with fresh fruit and a simple green salad, this ultimate breakfast casserole makes for a simple yet tasty brunch or lunch—plus, any leftovers heat up well in the microwave for fast weekday breakfasts. If desired, you can assemble the casserole the night before you plan to serve it, then bake in the morning—just add 10 to 15 minutes to the baking time.

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Ingredients

  • 1 pound frozen hashbrowns

  • 1 tablespoon olive oil

  • 1 pound fresh chorizo

  • 1 yellow onion, chopped

  • 12 eggs

  • 3 cups grated cheddar cheese, divided

  • 1 1/2 cups sour cream, divided

  • 1 cup whole milk

  • 1 teaspoon kosher salt

  • 1/2 teaspoon ground pepper

  • 1 cup chopped green onions

  • 1 avocado, sliced

  • 1/2 cup pickled jalapeños (optional)

Directions

  1. Gather all ingredients.

    Ingredients for a casserole.

    Allrecipes / Maren Ellingboe King

  2. Preheat the oven to 400 degrees F (200 degrees C). Grease a 9-by-13-inch baking dish. Spread hash browns over the bottom of the baking dish.

    A pan filled with hashbrowns.

    Allrecipes / Maren Ellingboe King

  3. Heat olive oil in a large skillet over medium heat. Add chorizo and onion, using a flat wooden spoon to break up the meat into smaller pieces. Cook until browned, about 8 to 10 minutes. Set aside.

    Chorizo and onion in a pan.

    Allrecipes / Maren Ellingboe King

  4. Whisk eggs, 2 cups Cheddar cheese, 1 cup sour cream, milk, salt, and pepper in a large bowl. Stir in chorizo mixture.

    Eggs and chirzo mixed together in a bow.

    Allrecipes / Maren Ellingboe King

  5. Pour egg mixture over hash browns in baking dish. Dollop remaining 1/2 cup sour cream over eggs, and sprinkle with remaining 1 cup cheese.

    Pre-baked ultimate breakfast casserole.

    Allrecipes / Maren Ellingboe King

  6. Bake for 35 to 45 minutes, until just set in the center. Sprinkle with green onions, avocado, and pickled jalapeños, if using. Cut into squares and serve immediately.

    Baked ultimate breakfast casserole covered in avocado.

    Allrecipes / Maren Ellingboe King

Nutrition Facts (per serving)

899 Calories
71g Fat
29g Carbs
38g Protein
Nutrition Facts
Servings Per Recipe 8
Calories 899
% Daily Value *
Total Fat 71g 91%
Saturated Fat 26g 131%
Cholesterol 399mg 133%
Sodium 1594mg 69%
Total Carbohydrate 29g 11%
Dietary Fiber 5g 19%
Total Sugars 5g
Protein 38g 75%
Vitamin C 11mg 13%
Calcium 454mg 35%
Iron 3mg 18%
Potassium 956mg 20%

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.

(-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.

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