Sausage Tart (Filling for Sausage Tart)

Make the filling: in a large skillet, cook the onion and butter over medium heat, stirring occasionally with a wooden spoon, until the onion is soft (about 10 minutes)

Add the eggs, mustard, and salt, stir well, and cook until the mixture is slightly creamy (about 5 minutes)

Add the sausage slices and chopped parsley, stir well, and remove from heat

Let cool and fill the tart

Make the dough: preheat the oven to 350°F (medium)

In a medium bowl, place the all-purpose flour and make a depression in the center

Add the remaining ingredients and mix well with a fork

Knead with your hands until the dough is homogeneous

Divide it into three equal parts

With two-thirds of it, line an 8-inch round cake pan by pressing the dough with your fingers

Trim the edges of the dough with a knife and fill

Roll out the remaining dough on a floured surface to about 1/4 inch thickness

Cover the filling with the dough, pressing the edges to seal the tart well

Mix the egg yolk with the brewed coffee and brush the top of the dough

Put it in the preheated oven until golden brown (about 35 minutes)

Remove, remove the ring from the cake pan, transfer the tart to a plate, and serve immediately

349 calories per slice