
In a large skillet, cook and crumble beef with onion and garlic over medium heat until no longer pink, 5-7 minutes; drain. Stir in chili sauce and vinegar.
In a small saucepan, combine water, cream cheese and butter; bring to a boil. Remove from heat; stir in potato flakes.
Press each biscuit onto bottom and up sides of a greased muffin cup. Fill with beef mixture; top with mashed potatoes. Sprinkle with potato chips.
Bake at 375° until topping is golden brown, 20-25 minutes. If desired, sprinkle with paprika.