Blue Cheese and Carmelized Onion Squares

These were in the Bon Appetit November issue.  So easy and great for company.  Also, the dough is perfect for making homemade pizza.  Quick and easy.

Crust:
2 cups flour
2 tsp. baking powder
3/4 t. kosher salt
3/4 cup whole milk
1/4 cup olive oil
2 T. melted unsalted butter

Topping:
2 T. unsalted butter
2 T. olive oil
3 large onions thinly sliced
1 T. finely chopped fresh rosemary
1 t. sugar
1/2 t. salt

1 1/2 cups crumbled blue cheese

Preheat the oven to 425.  Mix the flour, baking powder and salt in a medium bowl.  Make a well in the center. Mix together the milk, olive oil and butter.  Slowly pour into the well of dry ingredients and whisk until the dough is formed.  Roll the dough out on a floured surface to create a 10 X 13 triangle.  Put this into a rimmed cookie sheet and repull the dough to be 10 X 13.  Piece the dough all over with a fork.

In the meantime, melt the butter and olive oil and add the onions.  Cook until they begin to get soft and brown.  About 10 minutes.  Then add in the rosemary, sugar and salt.  Continue to cook until the onions get really soft and dark, about another 10 minutes.  Let cool.

Spread the onion mixture over the dough.  Sprinkle with the cheese.  Bake for about 20 minutes or until golden and bubbly.  Cut into squares and serve.  Really good.