Ingredients
1onion,thinly sliced
1tbspbrown sugar
2dropswhite wine vinegar
cooking spray
4egg whites
2eggs
¼cupGouda cheese,shredded
1prosciutto slice,thick-cut, cubed
Preparation
Cook and stir the onion, brown sugar, and vinegar in a skillet over medium heat for about 20 minutes until onion is golden.
Preheat the oven to 350 degrees F. Spray a 6-muffin tin with cooking spray.
Whisk the egg whites and eggs in a large measuring cup.
Fill each muffin cup halfway with egg mixture. Scatter the onion, Gouda cheese, and prosciutto cubes on top. Cover with remaining egg mixture, leaving ¼-inch space at the top for eggs to rise.
Bake in the oven for about 20 minutes until golden brown on top.
Serve warm and enjoy!
