Vegetable Sandwich Roll

Ingredients

• 2 tsp. olive oil
• 1 small onion, slivered
• 2 cloves garlic, chopped
• 1/4 c. water
• 2 (10 oz.) pkg. frozen chopped broccoli, thawed and well drained
• 1 c. reduced-fat Cheddar cheese, shredded
• 1/2 c. toasted walnuts, finely chopped
• 1/4 c. grated Parmesan cheese
• 1 loaf frozen bread dough, thawed to room temperature