Potato Lasagna

Ingredients

• 1 (10 oz.) pkg. frozen chopped broccoli, thawed
• 1 (15 oz.) carton nonfat Ricotta cheese
• 1 c. shredded carrot
• 1/2 c. minced green onions
• 1 tsp. dried whole marjoram
• 1/2 tsp. freshly ground pepper
• vegetable cooking spray
• 5 large red potatoes, peeled and thinly sliced
• 1 1/2 c. shredded part skim Mozzarella cheese
• 1/2 c. freshly grated Parmesan cheese