Primal Kitchen Peanut Butter Protein Bars I am obsessed with peanut butter, and this Primal Kitchen Peanut Butter Protein Bar ($28 for 12) is basically my favourite nut butter, just in bar form. It packs a hearty serving of fat (16 grams!) so it's perfect for those following a keto diet or those just want more healthy fats to feel satiated. Each bar has eight grams of net carbs and just two grams of sugar. Image Source: amazon.com Primal Kitchen Peanut Butter Protein Bar $28 from amazon.com Buy Now