Ingredients:
1 butter pie crust
1 tablespoon oil
1 cup ham (diced)
1 tablespoon butter
2 leeks (trimmed, cleaned and white and light green parts sliced)
2 cloves garlic
1 egg
1/4 cup heavy/whipping cream (or sour cream)
1 teaspoon whole grain mustard
1 1/2 cup swiss cheese (grated)

Directions:
1. Roll the pie dough out, fit it into the tart pan and trim the edges.
2. Heat the oil in a pan over medium.
3. Add the ham and saute until it starts to turn lightly golden brown, about 7-10 minutes and set aside.
4. Melt the butter in the same pan over medium heat.
5. Add the leeks and saute until tender, about 7-10 minutes.
6. Add the garlic and saute until fragrant, about a minute and remove from heat.
7. Mix the egg, cream and mustard.
8. Mix the ham, leeks, the egg mixture and 1 cup of the cheese and pour it into the tart shell.
9. Sprinkle the remaining cheese on top.
10. Bake in a preheated 350F oven until the cheese has melted an the pie shell is a light golden brown, about 20 minutes.