Skillet Calzone

Ingredients

• 1 lb ground beef
• 1⁄4 C chopped onion
• 1-lb portion fresh pizza dough, or thawed from frozen
• 1⁄2 C marinara
• 2 C shredded mozzarella or Italian blend
• 1 C chopped tomatoes
• 1 C chopped red, green or yellow bell peppers
• 1⁄2 tsp dried oregano
• 1⁄4 tsp crushed red pepper
• Marinara sauce for serving