Feta-Herb Edamame Succotash

INGREDIENTS

1 tbsp

olive oil

medium yellow onion, chopped (about 1 cup)

2 cups

frozen shelled edamame, thawed

1 1/2 cups

frozen corn kernels, thawed

1 cup

grape tomatoes, halved lengthwise

1 oz

feta cheese, crumbled (about 1/4 cup)

2 tbsp

chopped fresh dill

2 tbsp

chopped fresh flat-leaf parsley

2 tbsp

sherry vinegar

1/2 tsp

kosher salt

1/4 tsp

freshly ground black pepper