Caramelized Onion Breakfast Casserole

3.6
(41)

This make-ahead brunch casserole is flavor-packed with fresh broccoli, gooey cheese, and sweet caramelized onions.

Caramelized Onion Breakfast Casserole
Photo: Blaine Moats
Prep Time:
30 mins
Chill Time:
2 hrs
Bake Time:
40 mins
Stand Time:
10 mins
Total Time:
3 hrs 20 mins
Servings:
6

Ingredients

  • 4 strips bacon

  • 1 sweet onion, halved and thinly sliced

  • 2 cup broccoli florets

  • 5 eggs

  • 1 ⅓ cup milk

  • ½ teaspoon dried basil, crushed

  • ¼ teaspoon salt

  • teaspoon ground black pepper

  • 4 cup crusty sourdough bread, cut in 1/4-inch cubes

  • 4 ounce Muenster or Swiss cheese, cut into 1/2-inch cubes

Directions

  1. In a large skillet, cook bacon until crisp. Transfer bacon to plate lined with paper towels to drain, reserving 2 tablespoons drippings in the skillet. Crumble bacon; set aside. Add onion to skillet; cover and cook over medium-low heat for 15 minutes, stirring occasionally. Uncover and cook over medium heat until caramelized, about 5 minutes. Meanwhile, cook broccoli in a small amount of lightly salted water for 3 minutes; drain.

  2. In a large bowl combine eggs, milk, basil, salt and pepper. Stir in bread cubes, broccoli, caramelized onion, cheese, and crumbled bacon. Transfer to a 2-quart baking dish. Cover and chill for 2 hours.

  3. Preheat oven to 325°F. Bake casserole, covered, for 20 minutes. Uncover and bake 20 to 30 minutes more or until a knife inserted near center comes out clean. Let stand 10 minutes before serving.

Make-Ahead Tip

Prepare as directed. Cover and refrigerate up to 24 hours. To serve, preheat oven to 325°F. Bake casserole, covered, for 20 minutes. Uncover and bake 20 to 30 minutes more or until a knife inserted near center comes out clean. Let stand 10 minutes before serving.

Nutrition Facts (per serving)

302 Calories
18g Fat
19g Carbs
17g Protein
Nutrition Facts
Servings Per Recipe 6
Calories 302
% Daily Value *
Total Fat 18g 23%
Saturated Fat 8g 40%
Cholesterol 188mg 63%
Sodium 542mg 24%
Total Carbohydrate 19g 7%
Total Sugars 7g
Protein 17g
Vitamin C 24.2mg 121%
Calcium 262.5mg 20%
Iron 2mg 11%
Potassium 359mg 8%
Folate, total 84.7mcg
Vitamin B-12 1mcg
Vitamin B-6 0.3mg

*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

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