In A Bowl, Combine Bean Dip, Onion And Green Pepper; Set Aside. On A Lightly Floured Surface, Roll Pastry To 1/8-In. Thickness. Sprinkle With Half Of Cheese; Press Lightly With Fingers. Turn Pastry Over; Sprinkle With Remaining Cheese And Press Lightly. Cut Into 3-In. Circles. Place About 2 Teaspoons Bean Mixture In The Center Of Each Circle. Fold Over; Press Edges With A Fork To Seal. Sprinkle With Chili Powder. Place On Lightly Greased Baking Sheets. Bake At 350