Overnight Coffee Cake

2 c. flour
1 tsp. baking soda
1/2 tsp. salt
1 c. sugar
2 eggs
1 tsp. baking powder
1 tsp. cinnamon
2/3 c. butter
1/2 c. brown sugar
1 c. buttermilk

TOPPING:
1/2 c. brown sugar
1/2 tsp. cinnamon
1/2 c. chopped walnuts
1/4 tsp. nutmeg

Mix together flour, baking soda, baking powder, cinnamon and salt.

Cream butter, sugar and brown sugar until light and fluffy. Add buttermilk and eggs, one at a time, beating well after each addition. Gradually add in flour until well mixed.

Spread batter in a gread and floured 9x13 pan. Combine topping ingredients and sprinkle over batter.

Refrigerate at least 8 hours. Bake at 350F for 45 min. Cut into squares and serve warm.