Old Fashioned Coffee Cake

Made this for breakfast yesterday.  Matt and the kids had most of it gone before I could get the rest of breakfast on the table.  It's a very simple, tasty cake.  Best served warm, but great to make ahead of time. 

1/2 cup light brown sugar, packed
1 teaspoon cinnamon
1 tablespoon all purpose flour
1/2 cup chopped nuts (I used walnuts)
4 tablespoons melted butter, divided
1/2 cup granulated sugar
1/2 cup milk
1 large egg
1 cup all purpose flour
1/2 teaspoon salt
2 teaspoons baking powder

Preheat oven to 375*
Whisk together the brown sugar, cinnamon, 1 tablespoon flour and nuts; stir in 2 tablespoon of the melted butter until well mixed and set aside.

Butter a glass 8x8 baking pan.  mix together the other 2 tablespoons of melted butter with the granulated sugar.  Whisk together the milk and egg; add that to the sugar.  Whisk together the 1 cup of flour, salt and baking powder, and mix directly into the milk mixture and beat until smooth.  Pour into the baking pan.

Sprinkle the brown sugar topping evenly across the top and bake for 25 minutes.  Remove and set aside to cool just enough to handle.  Serve with piping hot coffee.