Ingredients
Method
Step-by-Step
- Heat the oven to 350°F (175°C). Coat all 12 wells of a muffin pan thoroughly with cooking spray or use 1 teaspoon olive oil, paying special attention to the edges.
- Whisk the eggs, milk, kosher salt, and black pepper in a bowl until the mixture is evenly combined and no streaks of egg white remain.
- Divide the finely diced bell pepper, onion, chopped spinach, and shredded cheddar evenly among the prepared muffin cups.
- Pour the egg mixture over the vegetables and cheese, filling each cup about three-quarters full. Leave a little space at the top because the eggs will puff as they bake.
- Bake for 18–22 minutes, until the centers are set and the tops are lightly puffed. Remove the pan from the oven and let the cups rest for 5 minutes.
- Loosen the breakfast cups with a thin knife or spatula and serve warm. Cool any extras completely before storing them in the refrigerator.
Notes
Dice vegetables very finely and avoid adding watery vegetables unless they are sautéed first. Silicone liners or parchment baking cups can make removal easier. Refrigerate cooled cups for up to 4 days and microwave each cup for about 20–30 seconds when reheating.
