3 tbsp extra virgin olive oil
2 cups fresh corn kernels, cut from 3 ears
1 large Vidalia or other sweet onion, chopped into ½-inch pieces
4 garlic cloves, minced
1 red bell pepper, cut into 1/2-inch pieces
1 orange bell pepper, cut into 1/2-inch pieces
1 medium zucchini, cut into 1/2-inch pieces
1 (12-ounce) bag frozen shelled edamame
2 cups low sodium chicken broth