Cinnabun Cake

I found this recipe at The Sisters Cafe, and they mentioned that they found it at Picky Palate. I made it for a neighborhood brunch, and wow. I am going to go ahead and say I prefer this to an actual cinnamon roll! The picture just doesn't do it justice. It was moist and flavorful and so, so, good.

3 cups flour
¼ teaspoon salt
1 cup sugar
4 teaspoons baking powder
1 ½ cups milk
2 eggs
2 teaspoons vanilla
4 T. butter, melted

2 sticks butter, softened
1 cup brown sugar
2 T. flour
1 T. cinnamon
2/3 cups nuts, optional

2 cups powdered sugar
5 T. milk
1 teaspoon vanilla

In an electric or stand mixer mix the flour, salt, sugar, baking powder, milk, eggs and vanilla. Once combined well, slowly stir in melted butter. Pour batter into a greased 9 x 13 inch baking pan. In a large bowl, mix the 2 sticks of softened butter, brown sugar, flour, cinnamon and nuts until well combined. Drop evenly over cake batter by the tablespoonfuls and use a knife to marble/swirl through the cake. Bake at 350 for 25-30 minutes or until toothpick comes out nearly clean from center. Place powdered sugar, milk and vanilla in a large bowl. Whisk until smooth. Drizzle over warm cake. Serve warm or at room temperature.