Remove the lid from the peppers and hollow them out. Cut the feta into pieces and mash finely with a fork. Mix well with the sour cream, eggs, pepper and cornstarch with a mixer. Fill the thin-bodied mass into the hollowed out peppers, place them in a mold and bake in the oven for about 50 minutes.
For the tomato sauce, finely chop the onion and brown in the olive oil. Crush garlic cloves and add. Add tomatoes and let everything simmer for a few minutes on a low flame, stirring every now and then. Finally, season with Tabasco, thyme and oregano.
When the fullness of the bell peppers has solidified, serve with the tomato sauce.