Preheat the oven to 400 degrees. Grease a 9-inch layer round layer cake pan or an 8-inch or 9-inch square pan. Blend the first 4 ingredients together and beat vigorously for 30 seconds. Pour into the prepared pan. Blend the last 4 ingredients together with a fork until crumbly and sprinkle on top of the batter in the pan. Bake for 20 to 25 minutes.
Source: 133 Quicker Ways to Homemade...with Bisquick, General Mills, 1959