Step 1

Preheat the oven to 350˚F (180˚C).

Step 2

Lightly grease a muffin tin.

Step 3

Then divide equally the spinach across 6 cups.

Step 4

Dice the tomato, then fill the cups with the tomato and egg whites.

Step 5

Season with salt and pepper.

Step 6

Bake for 15 minutes, or until the whites have set.

Step 7

Serve hot.

Step 8

Enjoy!