Slow Cooker Hawaiian Haystacks with Avocado Crema

WHITE SAUCE:

butter

Large garlic clove, minced (about 1 Tablespoon)

onion powder

flour

chicken broth, divided

milk

salt and pepper

large chicken breasts

AVOCADO CREMA:

large avocado, halved, pitted, and chopped coarse

sour cream

honey

lime juice

salt

FOR SERVING:

cooked rice

TOPPINGS: crunchy Asian noodles, sliced black olives, diced fresh pineapple, mandarin oranges, green onions, chopped celery, diced red bell pepper, chopped macadamia nuts, shredded coconut, shredded cheese, etc.