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Healthy Breakfast Casserole for Weight Loss & Clean Eating - Easy, Satisfying, and Make-Ahead

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Prep Time 15 minutes
Cook Time 45 minutes
Total Time 1 hour
Servings 8 servings

Ingredients
  

  • Eggs: 10 large
  • Egg whites: 1 cup (carton or from about 6 eggs) for extra protein with fewer calories
  • Lean ground turkey: 1 pound (93%–99% lean) or chicken sausage removed from casings
  • Vegetables: 1 red bell pepper, 1 green bell pepper, 1 small yellow onion, 2 cups baby spinach, 1 medium zucchini
  • Starchy base (optional but satisfying): 2 cups small-diced sweet potato (about 1 medium) or frozen riced cauliflower for lower carbs
  • Cheese (optional): 1/2 cup shredded sharp cheddar or feta for flavor without overdoing it
  • Herbs & spices: 2 cloves garlic (minced), 1 teaspoon smoked paprika, 1 teaspoon dried Italian seasoning, 1/2 teaspoon crushed red pepper (optional), salt and black pepper
  • Olive oil or avocado oil: 1–2 tablespoons
  • Fresh herbs (optional): Chives or parsley for garnish
  • Cooking spray: For the baking dish

Instructions
 

  • Heat the oven: Preheat to 375°F (190°C). Lightly coat a 9x13-inch baking dish with cooking spray.
  • Prep the sweet potato: Toss diced sweet potato with 1 teaspoon oil, a pinch of salt, and pepper. Spread on a sheet pan and roast for 15 minutes, until just tender. This prevents soggy casserole bottoms.
  • Cook the turkey: Warm 1 teaspoon oil in a large skillet over medium heat. Add ground turkey, 1/2 teaspoon salt, black pepper, and smoked paprika. Cook, breaking it up, until browned and cooked through, 6–8 minutes.
  • Sauté the veggies: Add onion and bell peppers to the skillet. Cook 4–5 minutes until soft. Stir in zucchini and garlic; cook 2 minutes more. Fold in spinach until wilted. Taste and season with a bit more salt and Italian seasoning.
  • Whisk the eggs: In a large bowl, whisk eggs, egg whites, 1/2 teaspoon salt, and black pepper. If using cheese, stir in half now; reserve the rest for topping.
  • Assemble: Spread roasted sweet potato in the baking dish. Top with turkey-veggie mixture. Pour egg mixture evenly over the top. Sprinkle remaining cheese (if using).
  • Bake: Bake 28–35 minutes, until the center is set and the edges are lightly golden. A knife inserted in the center should come out clean.
  • Rest and slice: Let it rest 8–10 minutes. This helps it set and slice cleanly. Garnish with fresh herbs.
  • Serve: Cut into 6–8 squares. Add a spoon of salsa or a few avocado slices if you like.