Preheat oven to 400 degrees F and grease a baking sheet.

In a large bowl, combine all-purpose flour, whole wheat flour, sugar, baking powder, and salt.

Gradually stir in heavy cream with a fork until a soft dough forms.

Lightly flour a board and knead the dough 10 to 12 times.

Re-flour the board and pat the dough into a 1/2 inch thick circle or rectangle.

Cut into 2 1/2-inch biscuits using a biscuit cutter or by cutting into squares.

Place biscuits on the prepared baking sheet.

Bake for 15 to 18 minutes, or until golden on top.

Optional Variation: Add ground cinnamon and ground nutmeg to the dry ingredients for a spiced biscuit.