Chocolate-Chip Cake
["2 c. flour", "1 1/2 c. sugar", "2 tsp. baking powder", "1/2 tsp. baking soda", "1/2 tsp. salt", "1 1/3 c. sour cream", "2/3 c. butter, softened", "1 tsp. vanilla", "3 eggs", "1/2 c. sugar (set aside)", "1 tsp. cinnamon", "6 oz. chocolate chips (semi-sweet)"]
["Heat oven to 350\u00b0 (325\u00b0 glass pan).", "Grease 13 x 9-inch pan. In large bowl, combine first 9 ingredients.", "Blend 1 minute at low speed.", "Beat 3 minutes at medium speed.", "Pour 1/2 the batter (2 1/2 cups) into greased pan."]
["flour", "sugar", "baking powder", "baking soda", "salt", "sour cream", "butter", "vanilla", "eggs", "sugar", "cinnamon", "chocolate chips"]