Cinna-bun Cake

My Mom makes the best cinnamon buns.  I don’t make cinnamon buns…I’ve been craving Mom’s cinnamon buns, but they’ve been away.  So I had to improvise.  Enter Cinnamon Bun Cake, or as our two year old calls it, Cinabun Cake.
Ingredients
Base:

• 3 cups flour
• 1/4 teaspoon salt
• 1 cup sugar
• 4 teaspoons baking powder
• 1 1/2 cups milk
• 2 eggs
• 2 teaspoons vanilla
• 1/2 cup butter, melted

Topping:

• 1 cup butter, softened
• 1 cup brown sugar
• 2 tablespoons flour
• 1 tablespoon cinnamon