Unfold pie crust and lay out flat.
Sprinkle flour over the crusts.
Using a biscuit cutter, cut out 2 inch round circles to form tart crusts.
Put one circle into each mini muffin tin slot.
Prick with fork.
Bake for 10-12 minutes at 450 degrees.
While these are baking, brown ground beef and bell peppers in a frying pan.
Drain and add sloppy joe sauce.
Spoon mixture into tarts.