Preheat oven to three hundred and seventy-five degrees.
In a large bowl sift together four cups of Bisquick, four tablespoons of sugar, two teaspoons of baking powder, one-half teaspoon of baking soda, and one-half teaspoon of salt.
Cut in one cup of butter until crumbly. Add the two cups of sour cream along with the four tablespoons of milk and stir until combined, being careful not to over mix.
If the dough is too dry, you can add a little more milk. Place the dough onto a floured surface and roll it out to approximately one-half inch thick.
Cut into round shapes with a biscuit cutter and place each one onto a greased baking sheet.
Bake for ten to fifteen minutes.
Mix the two teaspoons of ground cinnamon with the one teaspoon of sugar, and sprinkle over the biscuits while they are still warm.
Let cool on a wire rack. Serve with freshly sliced strawberries and whipped cream and enjoy.