Cinnamon Buttermilk Coffee Cake

& 1/2 cups all-purpose flour

& 1/2 cups light brown sugar, packed

salt

butter

baking powder

baking soda

ground cinnamon

ground nutmeg

large eggs, beaten

& 1/3 cups buttermilk or sour milk {Sour milk can be by placing 4 tsp. lemon juice in a 2-cup measuring cup and adding enough milk to make 1 & 1/3 cups total. Let sit for 5 minutes before using.}

powdered sugar

vanilla

& 1/2 Tbsp. milk