Slow-Cooker 5-Cheese Taco Lasagna

Ingredients

• 1 pound lean ground beef or ground turkey
• 1 1/4 ounce taco seasoning
• 1 tablespoon tomato paste
• 16 ounce ricotta cheese
• 1 egg
• 10 whole-wheat lasagna noodles
• 3 cup picante sauce or salsa
• 1 cup queso quesadilla cheese, grated
• 1 cup queso blanco cheese, grated
• 1 cup sharp cheddar cheese, grated
• 1 cup cotija cheese, grated
• 2 1/4 ounce sliced black olives, optional (canned)
• sour cream, for topping
• diced red onion, for topping
• cilantro, chopped, for topping
• sliced avocado, for topping