Slow Cooker Lasagna

Ingredients

• 1 lb. ground beef
• 1 large onion , chopped (I don't use this)
• 2 cloves garlic, minced or equivalent garlic powder
• 1- 29 oz. can tomato sauce
• 1 cup water
• 1 tsp. salt
• 1 tsp. dried oregano
• 1 pkg. 8 oz. noodles
• 4 cups (16 oz.) mozzarella cheese
• 1 1/2 cup (12 oz.) small curd cottage cheese
• 1/2 cup grated parmesan cheese