Best Frittata Egg Muffins (Printable)

Fluffy egg muffins packed with vegetables and cheese, ideal for breakfast or snack.

# What's Needed:

→ Eggs and Dairy

01 - 8 large eggs
02 - 1/3 cup whole milk
03 - 1 cup shredded cheddar cheese
04 - 1/3 cup grated Parmesan cheese

→ Vegetables

05 - 1 cup baby spinach, chopped
06 - 1/2 cup red bell pepper, diced
07 - 1/2 cup cherry tomatoes, quartered
08 - 1/3 cup red onion, finely chopped

→ Herbs & Seasoning

09 - 1/4 teaspoon salt
10 - 1/4 teaspoon freshly ground black pepper
11 - 1/2 teaspoon dried Italian herbs

→ Oils

12 - 1 tablespoon olive oil

# How to Make It:

01 - Preheat the oven to 375°F. Lightly grease a 12-cup muffin tin with olive oil or nonstick spray.
02 - Heat olive oil in a skillet over medium heat. Add red onion and bell pepper; sauté for 3–4 minutes until softened. Stir in spinach and cook for 1 minute until wilted. Remove from heat and let cool slightly.
03 - In a large bowl, whisk eggs, milk, salt, pepper, and Italian herbs until well combined.
04 - Fold in cheddar cheese, Parmesan, sautéed vegetables, and cherry tomatoes.
05 - Divide the egg mixture evenly among the muffin cups, filling each about 3/4 full.
06 - Bake for 18–20 minutes, or until the muffins are puffed and set in the center.
07 - Let cool for 5 minutes before removing from the tin. Serve warm or at room temperature.

# Tips for Success:

01 -
  • They reheat beautifully so your weekday breakfast feels like a treat instead of an afterthought
  • The vegetables actually stay tender and flavorful instead of turning into mushy surprises
  • You can customize them with whatever is wilting in your crisper drawer right now
02 -
  • Overfilling the muffin cups will make them stick and create a mess so stick to the 3/4 full mark
  • Letting the vegetables cool slightly before mixing them prevents the eggs from cooking prematurely
  • They will deflate slightly as they cool which is completely normal and does not affect the texture
03 -
  • Use a silicone muffin tin or paper liners for the easiest removal ever
  • Let them cool completely before freezing otherwise you will end up with soggy muffins from ice crystals forming inside