Preheat your oven to 350 degrees Fahrenheit. Crack and whisk eggs in a bowl along with salt and pepper. Slice the cherry tomatoes in half.
Step 2
Heat a stainless/oven-safe pan over medium-high heat. Once hot, add the butter and move the pan around so the melted butter coats the inside of the pan.
Step 3
Add the eggs to the pan along with the sliced tomatoes and reduce to medium heat.
Step 4
When the eggs start to bubble, add arugula and crumble the feta on top. Allow to cook on the stove top for about 2 minutes, or until the bottom of the frittata starts to brown. Cover the pan with a lid and reduce the heat to low. Cook for an additional 2-3 minutes.
Step 5
Uncover the pan and place in the oven for about 8-10 minutes, or until the frittata is fully cooked. Remove and allow to cool before slicing. Enjoy!