Caramelized Onion and Mushroom Tart

When I first heard of this my first though was "nasty", and this was coming from a guy who loves onions! Then I was looking around in many cook books and found a number for different recipes for onion pizzas, onion bread, onion tarts, etc. so I thought if cook books have all these different recipes using caramelize onion they must be good! Right? so I tried a couple of different recipe and I was right!
I love onion tarts, the crispy crust with the onion and mushrooms, which give off a sweet taste when their caramelized, next to the complex flavor of the red wine! So here is my recipe of a Caramelized Onion and Mushroom Tart

1/4 C. Sour cream
1/4 c. Parmesan cheese
3 T. Butter
about 10 mushrooms
3 Medium onions
2 cloves of garlic
1/4 C. Ham or bacon
One pre cooked tart crust recipe

Slice onions and mushrooms and put into sauté pan with melted butter and cook till caramelized
Minced garlic
After caramelizing add garlic and ham
After the mixtures cooled add half of it into the sour cream
And are prebaked tart pan put the sour cream mixture on the bottom then the caramelize onions and mushrooms on top of that and then sprinkled the Parmesan cheese after
Broil till the cheese is golden

ENJOY