Step 1

Drain and rinse the kidney beans in a colander. Add those to a mixing bowl.

Step 2

Drain the green beans and add those to the mixing bowl.

Step 3

Drain the yellow beans and those go in the mixing bowl as well.

Step 4

Dice the onion and add that to the bowl.

Step 5

In a separate bowl, whisk the oil, sugar, salt, pepper, and parsley. Pour this over the beans and onions in the mixing bowl and gently toss to incorporate.

Step 6

For best taste, refrigerate 2 hours or overnight to let the flavors meld together. However, you can serve this right away if you choose.