115-ounce can butter beans, rinsed and drained, or 1½ cups cooked butter beans
Instructions
Bring a large pot of salted water to a boil over high heat. Cook the pasta according to the package instructions, then drain in a colander and run under cold water to cool. Refrigerate to cool even further.
In a large mixing bowl, whisk together the mayo, vinegar, sugar, onion powder, salt, and a few grinds of black pepper. Add the chilled pasta to the dressing, along with the cucumbers, radishes, and beans. Mix well. Add the carrot and dill and toss to combine. Taste and adjust for salt and pepper.
Cover and chill for at least 1 hour, up to 2 hours, to let the flavors meld. Serve cold, garnished with extra dill. If you need to creamy it up once chilled, add some splashes of water and/or extra mayo.