01 -
Preheat the oven to 375°F (190°C) and lightly grease a standard muffin tin with non-stick cooking spray.
02 -
Crack the eggs into a large bowl and whisk until frothy. Add the whole milk, salt, and black pepper, whisking until fully incorporated.
03 -
Fold in the chopped fresh spinach, crumbled feta cheese, chopped sun-dried tomatoes, and baking powder, mixing gently until just combined.
04 -
Evenly distribute the egg mixture among the prepared muffin cups, filling each approximately three-quarters full.
05 -
Transfer the muffin tin to the preheated oven and bake for 20 to 25 minutes, or until the tops are golden brown and the eggs are set.
06 -
Remove from the oven and allow the muffins to cool slightly before releasing from the tin. Serve warm.