Simple Coffee Cake

2 cups brown sugar
2 cups plus 6 tablespoons flour
1/2 cup butter
1 teaspoon cinnamon
1 teaspoon baking soda
1/2 teaspoon salt
1 teaspoon vanilla
1 cup buttermilk

Mix flour, sugar, and butter until crumbly. Reserve 3/4 cup for topping. Add the rest of the ingredients and mix well. Pour into a 8x10 pan. Sprinkle on topping. Bake at 350 for 45 minutes.

Comments: I needed something easy to use up buttermilk, and this one looked yummy. I probably used more vanilla and cinnamon than what was called for (because I don't so much measure as toss in) and I added cinnamon to the topping. It was done prior to the 45 minutes in my oven--the crumbly bits were starting to get dark, so I pulled it at around 38-40 minutes. It had a nice taste and soft texture that wasn't overly sweet.