Beef and Bell Pepper Grilled Pizza

Ingredients

• 1 onion, chopped
• 1 clove garlic, chopped
• 2 tablespoons (30 ml) olive oil
• 1 can 14 oz (398 ml) Italian crushed tomatoes
• 1/8 teaspoon (0.5 ml) crushed red pepper flakes
• Salt and pepper
• 1 recipe Pizza Dough (for 4)
• 1 small red onion, cut into 1/4-inch (0.5-cm) slices
• 1 lb (454 g) beef tenderloin steak
• 2 tablespoons (30 ml) olive oil
• 2 yellow or red bell peppers, roasted, peeled, and cut into strips
• 16 Kalamata olives, pitted and halved
• 1/4 cup (60 ml) grated Parmigiano-Reggiano cheese
• Salt and pepper