Nut butter cups are a popular treat made by combining a layer of rich chocolate with a creamy filling of nut butter, such as peanut butter or almond butter. These delicious snacks are often enjoyed as a sweet indulgence and can be found in various flavors and brands. Many people appreciate nut butter cups for their balance of sweetness and nuttiness, making them a satisfying option for dessert or a quick energy boost. They are also available in vegan and gluten-free varieties, catering to different dietary preferences and restrictions.