Mug cake of mustard and cheese

This cake made in a cup is very original because it is salty, is very fluffy and delicious, do not miss it!

Ingredients for a mug cake:
- 1 egg
- 5 level tablespoons of flour
- 2/3 teaspoon of baking powder
- 3 tablespoons of grated cheese
- 1 tablespoon of mustard 
- Salt
- Pepper
- 2 tablespoons of olive oil

Recipe:
- Mix in a bowl the egg, flour, a pinch of salt, another pinch of pepper, baking powder, mustard, grated cheese and oil.
- Stir well until you form a smooth paste.
- Pour all in a cup and cook in the microwave for 1 minute and 20 seconds at 800W.
- Remove from the microwave and sprinkle some black pepper on top.

Bon appetit!