Heat a splash of oil in a frying pan over medium heat. Add the finely chopped onions and fry until they become transparent.

Toss in the bell pepper, cut into small cubes, and sauté for a few minutes until tender.

Add the sausage, cut into small cubes, and cook until fully browned.

In a separate bowl, beat the eggs with salt, then mix in the milk until combined.

Incorporate the flour, ground black pepper, baking powder, paprika, baking soda, and oil into the egg mixture, stirring until smooth.

Chop the tomatoes into small cubes, grate the cheese, and finely chop the herbs.

Combine the tomato, cheese, and herbs with the sausage and vegetable mixture from the pan, stirring well.

Spread the entire mixture onto a baking sheet lined with parchment paper and greased with oil to prevent sticking.

Bake in a preheated oven at 180 degrees Celsius for about 30 minutes or until golden brown.