Spray or grease 4-quart or larger slow cooker. Add onion, garlic, apple, squash, carrots, chicken broth, milk, beer, crushed red pepper flakes, rosemary, salt and pepper. Cover; cook on Low heat setting 4 to 6 hours or High heat setting 2 to 4 hours. Squash should be tender. Transfer soup to blender; puree until smooth. Return to slow cooker. Add tortellini and cheeses; stir to combine. Cover; cook on High heat setting about 10 minutes or until tortellini is soft. Ladle into bowls; garnish with extra cheese, if desired. Serve with crusty bread. Spray or grease 4-quart or larger slow cooker. Add onion, garlic, apple, squash, carrots, chicken broth, milk, beer, crushed red pepper flakes, rosemary, salt and pepper. Cover; cook on Low heat setting 4 to 6 hours or High heat setting 2 to 4 hours. Squash should be tender. Transfer soup to blender; puree until smooth. Return to slow cooker. Add tortellini and cheeses; stir to combine. Cover; cook on High heat setting about 10 minutes or until tortellini is soft. Ladle into bowls; garnish with extra cheese, if desired. Serve with crusty bread.