Finely chop the shallot. Heat 1 tablespoon oil in a skillet and cook shallots until translucent.
Beat the eggs with a fork in a bowl. Add crème fraiche, grated cheese and 3/4 of the chopped spring onions. Season to taste with salt and pepper.
Heat the remaining oil in the skillet. Add the frittata mixture into the skillet and cook until the eggs start to set on top. Flip the frittata and continue cooking until golden brown, but still creamy on the inside.
Sprinkle with the remaining spring onions and serve preferably with cherry tomatoes.