Preheat the oven to three hundred and seventy-five degrees. Grease a baking sheet.
Blend four cups of Bisquick and a one-quarter cup of white sugar together. Add three tablespoons of lemon zest.
Cut in one-half cup of cold butter using a pastry cutter until mixture becomes crumbly.
Add two beaten eggs and two-thirds of a cup of buttermilk, mixing until the mixture forms a dough. If the dough is too sticky, add a little Bisquick.
Place the dough onto a lightly Bisquick floured surface and roll out to a thickness of one inch.
Cut into rounds using a cookie or biscuit cutter and place on the prepared baking sheet. Place them one-half inch apart to prevent them from sticking together.
Brush the tops of each biscuit with the additional cream and bake for ten to twelve minutes or until golden brown. Enjoy!