FOR THE CRUST
1 1/4 cups all-purpose flour (150 g)
8 tablespoons unsalted butter, cut into small pieces (120 g)
1 pinch of salt
3 tablespoons cold water
Raw kidney beans for garnish
FOR THE FILLING
1 medium onion, chopped
2 tablespoons unsalted butter
2 cups cooked prosciutto, finely chopped (320 g)
1 tablespoon English mustard
1 tablespoon mustard
1 medium tomato, cut into wedges
290g of cheese, cut into 16 slices
Salt to taste
FOR THE CRUST
1 1/4 cups all-purpose flour (150 g)
8 tablespoons unsalted butter, cut into small pieces (120 g)
1 pinch of salt
3 tablespoons cold water
Raw kidney beans for garnish
FOR THE FILLING
1 medium onion, chopped
2 tablespoons unsalted butter
2 cups cooked prosciutto, finely chopped (320 g)
1 tablespoon English mustard
1 tablespoon mustard
1 medium tomato, cut into wedges
290g of cheese, cut into 16 slices
Salt to taste
PREPARE THE CRUST: on a clean surface, mix the dry ingredients with the cold fat (butter or vegetable shortening) until you get a crumbly mixture
Make an indentation in the center of the mixture and add the water or milk
Mix the ingredients with your fingertips until the dough is homogeneous
Knead slightly
Shape the dough into a ball, dust it lightly with flour, wrap it in plastic film, and refrigerate for 1 hour
Roll out the dough directly onto the bottom of a 25cm (10 inch) tart pan with removable sides
If preferred, finish rolling out the dough by pressing it with your fingertips
Mount the tart pan, placing the ring
Make small ropes with the remaining dough and place them around the perimeter of the tart
Press them firmly onto the sides
Poke the bottom with a fork
Line the entire crust with parchment paper and fill with cooked kidney beans
Bake in a moderate oven (180°C) for 15 minutes
Remove the parchment paper with the beans and reassemble the tart
PREPARE THE FILLING: In a pan, fry the onion in butter until it starts to brown
Add the prosciutto, English mustard, and mustard
Mix well
Spread half of this mixture over the pre-baked tart crust
Cover with tomato wedges seasoned with salt
Place half of the cheese slices on top of the tomatoes
Add the remaining filling mixture
Arrange the remaining cheese slices in triangles and place them over the tart
Bake for 30 minutes in a moderate oven (180°C) until the cheese is melted
Unmold and serve hot
329 calories per serving