Beat the eggs and mix in the tomatoes, cheese, salt and pepper.
In a large oven proof skillet, heat the olive oil over medium heat. Add the pasta and sauce and heat for 1 minute.
Evenly distribute the pasta in the pan. 5. Pour the eggs over the pasta and coat as well as you can. 6. Sprinkle the eggs with salt and pepper. 7. Cook over medium heat for 4-6 minutes. The frittata should be mostly set but the top will still be runny. 8. Place the pan in the oven for 4-6 minutes until the eggs are set.
If you don't have an oven proof skillet, you can use a lid to set the top of the eggs or you can slide the frittata onto a plate and then flip back into the pan to cook the other side but you’ll have to cook it longer on the first side.
Recipe by Talking in ALL CAPS at https://talkinginallcaps.com/2011/03/loving-leftovers-pasta-frittata.html