Preheat oven to 350°F. Generously spray 12 muffin tins with nonstick cooking spray.
In a large microwave safe bowl, combine the apple butter, brown sugar and butter. Microwave 30-60 seconds or until butter is melted. Stir together, then set aside to cool.
Cut each biscuit into 6 pieces.
Add biscuit pieces to apple butter mixture and gently toss until evenly coated.
Place 4 biscuit pieces into each muffin tin mold.
Sprinkle tops with brown sugar.
Bake for 20 minutes. Remove from oven and let sit for 5 minutes before serving. Drizzle with glaze.
Mix powdered sugar, milk, and vanilla until smooth.