Cheesy Chicken Bacon Ranch Kale Casserole

Ingredients

• 2 tablespoons olive oil
• 1 large egg
• 3/4 cup chicken broth
• 1/2 yellow onion, chopped
• 1 1/2 cups shredded mozzarella cheese
• 1 teaspoon red chili pepper flakes
• 1/2 cup shredded cheddar cheese (divided)
• 3 cups penne style pasta, dry
• 1 bunch of kale, stems and stalks removed, shredded (about 6 cups packed)
• 1/2 teaspoon each salt/pepper
• 2 cups greek yogurt (I use 2%)
• 1/2 cup milk (I use 2%)
• 2 teaspoons Hidden Valley Ranch seasoning mix
• 3-4 cups of cooked shredded chicken (rotisserie chicken or any leftover chicken works)
• 1 cup bacon bits (homemade or store-bought)
• 1/2 cup shredded parmesan cheese, parmesan crisps, OR other topping