01 -
Preheat the oven to 400°F.
02 -
Add ½ teaspoon olive oil to an oven-safe 8-inch nonstick frying pan with a metal handle. Heat over medium heat and sauté diced bell pepper for about 4-5 minutes until softened.
03 -
Add chopped spinach to the pan and cook for about 2 minutes, or until slightly wilted.
04 -
Add the halved cherry tomatoes and cook for another minute. Pat the veggies with a paper towel to absorb any excess moisture.
05 -
Add the egg whites to a medium bowl and whisk until foamy. Alternatively, if using carton egg whites, shake vigorously with the cap sealed to achieve foaminess. Add black pepper and garlic powder, then whisk to combine. Do not let the egg whites settle before adding to the pan.
06 -
Pour the egg whites into the pan with the veggies. Top with shredded cheddar cheese, then bake in the oven for 16-20 minutes, or until the egg whites are fully cooked and cheese is melted and bubbly.
07 -
Remove from the pan, cut into quarters, and serve topped with optional sliced avocado and green onions.