Ingredients
2 cups liquid egg whites (from a carton)
1 cup fresh spinach, finely chopped
1/2 cup finely diced red bell pepper
1/4 cup finely diced white onion
1/4 tsp garlic powder
1/8 tsp baking powder (optional, for fluffiness)
Salt and black pepper to taste
Cooking spray or oil for greasing
Instructions
1. Preheat your oven to 350°F (175°C). Generously grease a 12-cup muffin tin.
2. In a small pan, briefly sauté the diced onion and bell pepper for 2-3 minutes until slightly softened. This step removes excess water and improves flavor. Add the chopped spinach and cook for 1 more minute until wilted. Squeeze out any excess liquid.
3. In a medium bowl, combine the liquid egg whites, garlic powder, baking powder (if using), salt, and pepper. Whisk vigorously for about 1 minute until the egg whites are frothy and slightly foamy.
4. Distribute the cooked vegetable mixture evenly among the 12 muffin cups.
5. Pour the whipped egg white mixture over the vegetables in each cup, filling them about three-quarters of the way full.
6. Bake for 15-20 minutes, or until the egg white cups are puffed up, golden brown on top, and the center is fully set.
7. Let the cups cool in the muffin tin for 5 minutes before running a thin knife or spatula around the edges to loosen. Transfer to a wire rack to cool completely.
Notes
Storage: Store the cooled egg white cups in an airtight container in the refrigerator for up to 5 days.
Reheating: Reheat in the microwave for 20-30 seconds until warmed through.
Starbucks Copycat: For a Starbucks-inspired version, add 1 tbsp of shredded Monterey Jack cheese and some chopped roasted red pepper to each cup along with the spinach.
Freezing: These cups freeze well. Place them on a baking sheet in the freezer until solid, then transfer to a freezer-safe bag for up to 3 months.
- Prep Time: 10
- Cook Time: 20
- Category: Breakfast
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 muffin cup
- Calories: 55
- Sugar: 1
- Sodium: 150
- Fat: 1
- Saturated Fat: 0
- Unsaturated Fat: 0
- Trans Fat: 0
- Carbohydrates: 2
- Fiber: 1
- Protein: 8
- Cholesterol: 0