Beef and Cheese Calzones Recipe from Italy with Mozzarella and Dijon Mustard

Ingredients

• 1 x 10 oz (283 g) can of refrigerated pizza crust dough
• 0.33 lb (150 g) thinly sliced roast beef or 1.75 lb (794 g) cooked leftover beef
• 2 medium green onions , sliced
• 1 x 4 oz (113 g) can of mushroom pieces and stems, drained
• 1 cup of shredded cheese , with 0.5 cup of mozzarella and 0.5 cup of cheddar or colby -Jack
• dijon mustard (optional)