1 cup butter
2 cups dark brown sugar (packed down)
2 large eggs
1 teaspoon vanilla extract
2 teaspoons baking powder
2 ¼ cups flour
(1/2 teaspoon if using unsalted butter)
Pre-heat oven to 350˚. Grease 13x9 pan.
Combine butter and dark sugar; mix thoroughly. Add eggs and vanilla extract. Beat until fluffy. Add baking powder and flour. Mix thoroughly.
Dough will be sticky; place in baking pan. Mix cinnamon/sugar; as much as you want. I usually make a lot. Sprinkle cinnamon sugar over the dough. Bake for 20-25 minutes. No oven bakes the same; I find that I bake the blondies on the middle rack for 20 minutes; turn the pan 180˚; put on the top rack; turn off oven and bake for another 3 minutes.