Cinnamon Streusel Cake (Jeanne)

1 Pkg. regular yellow cake mix

2/3 cup oil

4 eggs

1 cup buttermilk

¼ cup sugar

2/3 cup firmly packed brown sugar

4 tsp. ground cinnamon

¾ cup sifted powdered sugar

½ Tbs. lemon juice

Combine cake mix, oil, eggs, butter, milk & ¼ cup of sugar in a large bowl. Beat 2 minutes at medium speed in electric mixer. Pour half of batter into a greased & floured 9 X 13" pan. Combine brown sugar & cinnamon & divide in half. Sprinkle half over batter. Top with remaining batter – spread evenly then top with remaining cinnamon mixture. Run knife through mixture several times and swirl batter. Bake 325-degrees for 40 minutes. Combine powdered sugar & lemon juice. Pour over cake while still warm. Cut into squares.