Mushroom Arugula Pizza

Ingredients (9)

• 3 whole wheat sandwich thins split in open
• 0.25 cup diced red onion
• 4 clove garlic minced, divided use
• 8 oz white (button) mushrooms sliced
• 2 tsp olive oil
• 1 cup packed arugula about 3 cups loose
• 0.25 cup part-skim ricotta cheese
• 0.125 tsp white pepper
• 3 tbsp reduced-fat shredded mozzarella