Fill these rolls with this cabbage, ground beef and onion filling and you will revel in a delicious memory of Europe even if you have never been there.
Saute cabbage and onion in oil. Cover and steam for 30 minutes. Brown ground beef in a large pan, and drain well. Add cabbage, onion, sugar, vinegar, salt and pepper and cook for an additional 10 minutes.
Flatten each Texas roll, or 2 dinner rolls into a 6-inch circle. Divide filling among 12 circles (about 1/3 cup). Place 1 tablespoon mozzarella cheese on top of filling. Pull edges around filling and pinch to close.
Place on a large sprayed baking sheet, pinched side down. Brush tops with melted butter.
Bake at 350°F 30-35 minutes.