Munchable Muffin Pizzas

Ingredients

• 6 English muffins
• 225 g mild Italian sausages, sliced
• 1 large onion, coarsely chopped
• 1 red or green pepper, coarsely chopped
• 2 garlic cloves, finely chopped
• 225 ml tomato sauce
• 2 teaspoons dried rosemary, crumbled
• 100 g reduced-fat mozzarella cheese, grated