1. Preheat oven to 375°. Cook first 3 ingredients in a large skillet over medium heat, stirring occasionally, 5 minutes or until meat crumbles and is no longer pink. Drain well. Return meat mixture to skillet; stir in 1 cup pizza sauce. Remove from heat.
2. Press biscuits on bottom and up sides of lightly greased muffin cups. Spoon about 1 rounded tablespoonful meat mixture into each biscuit cup; top with ricotta cheese (about 1 heaping teaspoonful each). Sprinkle with shredded cheese.
3. Bake at 375° for 18 to 20 minutes or until golden. Remove from oven, and gently run a knife around outer edge of pizza cups to loosen from sides of pan. Remove cups from pan, using a spoon.
4. Place remaining pizza sauce in a small microwave-safe glass bowl; cover with plastic wrap. Microwave at HIGH 30 to 45 seconds or until thoroughly heated. Serve pizza cups with warm sauce.
Note: For testing purposes only, we used Pillsbury Buttermilk Biscuits and Ragú Homemade Style Pizza Sauce.