Sausage Pie

Pastry

Mix together the flour, baking powder, and salt

Add the butter and shortening and mix until a dough forms

Add the milk and knead

Roll out 2/3 of the dough to a thickness of about 1/4 inch and use it to line a removable-bottom pan with a diameter of 29cm

Dust with breadcrumbs and set aside

Filling

Sauté the onion in half the butter and oil, over low heat, until golden brown

Add the flour dissolved in water and mix

Add the egg yolks and mustard and stir

Cook until a creamy consistency is achieved

Season with salt and black pepper to taste

Cut the sausages in half lengthwise and fry them in the remaining butter and oil

Spread half of the onion cream over the pastry, cover with sausage, and top with the remaining cream

Dust again with breadcrumbs

Roll out the remaining pastry and use it to cover the filling

Press the edges well

Brush with egg, decorate with leftover pastry and brush again

Bake for 20 minutes or until golden brown

Let cool slightly and remove from pan