01 -
Preheat oven to 191°C. Generously grease a 12-cup muffin pan with nonstick spray. Avoid using paper liners, or if using, spray liners thoroughly.
02 -
In a medium mixing bowl with a pour spout, whisk together eggs, milk, salt, black pepper, onion powder, and garlic powder until just combined. Do not over-mix.
03 -
Spoon chopped bell pepper, tomatoes, and spinach evenly into each prepared muffin cup, using about 2 tablespoons per cup.
04 -
Top each muffin cup with approximately 1 tablespoon crumbled feta cheese.
05 -
Carefully pour the egg mixture into the muffin cups, filling each about three-quarters full, just above the level of the add-ins and cheese.
06 -
Bake for 18 to 20 minutes or until muffins are puffed and golden brown around the edges.
07 -
Remove from oven and let cool in the pan for 5 minutes; muffins will deflate slightly. Gently release muffins from the pan.
08 -
Serve warm with optional garnishes. Alternatively, cool completely and store in the refrigerator or freezer as desired.