TM Casserole swap

My moms' group is doing a casserole exchange this month for our MNI/O (Moms' Night In/Out). I'm making quiches. I made 6 different kinds:

Caramelized onion, swiss, and cheddar

Hashbrown,sausage, cheddar, swiss, and monteray jack

Tomato, basil, and mozzarella

I also made mushroom and swiss, broccoli and cheddar, and spinach and swiss quiches.

Ingredients:
For the dough:
1 stick cold stick butter, chopped
1 1/2 cups flour
1 egg yolk
Water
Handful of cheese (type depends on the filling)
Filling:
3 eggs
1 cup cream
1/2 chopped onion
2 tbsp butter
Any of the following (or a combination of): spinach, mushrooms, broccoli, onions (sauteed in butter until soft, then cooked in 1/4 cup brown sugar for 15 minutes), chopped tomatoes and basil, sausage and hashbrowns
2 generous handfuls of cheese: cheddar, swiss, mozzarella, monteray jack, or whatever you have on hand
Salt and pepper

Directions:

1. Combine the chopped butter and flour in the food processor, processing in short bursts until it resembles bread crumbs. Add the egg yolk, cheese, and a tablespoon or two of water and process in short bursts until a dough forms. Form into a ball and chill for half an hour.
2. Combine the eggs and cream in a bowl. Beat the eggs.
3. Saute the onion in butter until soft. Add to egg mixture.
4. Saute the vegetables for filling in butter. Add to egg mixture.
5. Add half the cheese to egg mixture. Season with salt and pepper.
6. Preheat oven to 350. Roll out the dough on a floured surface. Put into a quiche/tart pan. Blind bake for 10 minutes. Remove beads and back another 10 minutes.
7. Pour egg mixture into crust. Sprinkle with remaining cheese. Bake 45 minutes or until center is set.