Oatmeal Pecan Coffee Cake
["2 c. all-purpose flour", "1 c. quick cooking oats", "1 c. packed light brown sugar", "1/2 c. pecans, chopped", "1 1/2 tsp. baking powder", "1/2 tsp. baking soda", "1 tsp. cinnamon", "1/3 c. packed light brown sugar", "1/2 tsp. cinnamon", "1/4 c. margarine, melted and cooled", "1/2 c. pecans, chopped"]
["Preheat oven to 350\u00b0.", "Grease 13 x 9-inch baking pan.", "Combine dry ingredients in large mixing bowl.", "Whisk eggs and buttermilk together.", "Add to dry ingredients with melted margarine and stir until blended.", "Pour into pan."]
["flour", "cooking oats", "brown sugar", "pecans", "baking powder", "baking soda", "cinnamon", "brown sugar", "cinnamon", "margarine", "pecans"]