Cinnamon Coffee Cake
["1 c. butter or margarine (softened)", "2 3/4 c. sugar, divided", "2 tsp. vanilla extract", "4 eggs", "3 c. all-purpose flour", "2 tsp. baking powder", "1 tsp. baking soda", "1 tsp. salt", "2 c. sour cream", "2 Tbsp. ground cinnamon", "1/2 c. chopped walnuts"]
["In a large mixing bowl, cream butter and 2 cups of sugar until fluffy.", "Add vanilla.", "Add eggs, one at a time, beating well after each addition."]
["butter", "sugar", "vanilla extract", "eggs", "all-purpose", "baking powder", "baking soda", "salt", "sour cream", "ground cinnamon", "walnuts"]