ONION CHEESE TART

INGREDIENTS:
1 package pie crust for 2 (9 inch);
1 cup shredded mozzarella cheese,
2 medium sliced onions,
2 tablespoons olive oil,
1 egg,
2 tablespoons mixed seasonings (Italian, pepper, rosemary leaves)
DIRECTIONS:
Preheat oven to 375F. Saute the onion in two tablespoons of olive oil until golden. Stir in all seasonings. Remove from heat and set aside. On two aluminum foil lined baking sheets, unfold pie crusts. Fold crusts edges over 1 inch to form rim. Brush with one egg yolk beaten with two tablespoons water. Spoon 1/2 onion mixture on each prepared pie crust. Top with mozzarella.
Bake for 20 - 25 minutes or until crusts are golden brown.