01 -
Heat olive oil in a very hot nonstick skillet. Add chopped spinach and diced red bell pepper, sautéing for about 1 minute while stirring frequently to intensify flavor and prevent moisture buildup.
02 -
In a large mixing bowl, whisk liquid egg whites, skim milk, salt, black pepper, and garlic powder until slightly frothy to achieve a fluffier texture.
03 -
Add the sautéed vegetables and crumbled feta cheese to the egg mixture. Stir gently to distribute evenly without breaking down the cheese.
04 -
Lightly grease a 12-cup muffin tin with nonstick spray. Pour the mixture evenly into each cup, filling about three-quarters full to allow room for puffing.
05 -
Bake at 350°F for 18 to 22 minutes until muffins are set and tops spring back lightly when touched. Avoid overbaking to maintain moisture.
06 -
Allow muffins to cool in the tin for 5 minutes before loosening with a spatula or knife and removing. Serve warm or cool completely for later consumption.