Philly Style White Pizza

Ingredients

• 1 teaspoon/5 mL black pepper
• 5 tablespoons/75 mL olive oil
• 1 bell pepper
• 4 cups/950 mL shredded cheese
• 3 tablespoons/45 mL Worcestershire sauce
• 8 ounces/225 g mushrooms
• 8 ounces/225 g roast beef
• 1 teaspoon/5 mL garlic powder
• 1/4 cup/60 mL Parmesan cheese
• 1 loaf white bread dough
• 8 cloves garlic
• 1 medium onion