To prepare a walnut date ball recipe, first you need to gather your ingredients. You'll need: 1 pound of walnuts, 1 cup of granulated sugar, 3 tablespoons of ground cinnamon, and 1 teaspoon of vanilla extract. Toss the ingredients together until they're evenly coated. Roll the mixture into balls and place them in an airtight container. Store in the refrigerator for up to 3 days.