Answer: Almond butter is a more keto-friendly alternative to peanut butter.
Almond butter is a nice fatty snack that's still low in carbs. 2 tablespoons of almond butter contain ~18 g of fats and only ~3 g of net carbs. This high ratio of fats to carbs is a good match for keto's target mix of macros.
Be sure to choose a brand of almond butter that doesn't add in non-keto ingredients. Justin's is a popular, keto-friendly brand, as its ingredient list is simply almonds and palm oil. When in doubt, check the label for the ingredients and carb count.
Almond butter is a great complement to other keto foods. You can have it by itself, scoop it with celery, dip cauliflower into it, or mix it into a keto smoothie. There are also plenty of fat bomb recipes that make use of almond butter.