1. Preheat the oven to 375 °F and spray 2 baking sheets with the cooking spray. In a large bowl, using a fork or your hands, mix the biscuit mix, sausage, and cheeses until well blended. Add the milk and blend thoroughly, then roll the mixture into 72 balls, 1 inch in diameter. Arrange the balls on the baking sheets and bake for 20 minutes or just until golden brown. Serve hot with toothpicks.