Step 1Heat the oven to 425 degrees. Combine the flour, cheese, thyme, baking powder, sugar, salt and cayenne in a mixing bowl and toss with a fork to mix well. Cut the butter into thin slices and rub the butter into the dry ingredients with just the tips of your fingers until the mixture resembles coarse crumbs. Drizzle the cream over while tossing with the fork and mix just until a soft dough forms (you may not need all the cream). Turn out onto a lightly floured board and knead lightly with the heel of your hand until the dough just clings together with no dry spots.
Step 2Pat the dough out until it's one-half inch thick. Using a biscuit cutter or two (one-fourth-inch-wide) glasses, cut into rounds (or cut into triangles with a sharp knife). Arrange on an ungreased baking sheet at least 1 inch apart.
Step 3Bake in the center of the oven for 10 to 12 minutes, until golden brown. Serve hot.