This Creamy Cucumber Salad with Mayo is a light and refreshing side that's perfect on a hot summer's day. Crisp cucumbers, red onions, and a creamy dressing made with mayo, sour cream, and lots of fresh dill, this salad is a perfect addition to any cookout with friends or a weeknight summer dinner at home! It's light, fresh and an easy summer side dish to prepare. This cucumber salad also has sour cream in it, that lightens it up a bit and makes it keto and low carb side dish as well!