Quick Edamame Salad

Ingredients

• 1 (16 ounce) package frozen shelled edamame (green soybeans), thawed
• 1 (16 ounce) package frozen sweet corn, thawed
• 1 (16 ounce) package frozen sweet peas, thawed
• 1 (12 ounce) can black beans, drained and rinsed (optional)
• 1/2 red onion, minced
• 1/4 cup olive oil, or to taste
• 1/4 cup red wine vinegar, or to taste
• 1/2 teaspoon salt
• 1/2 teaspoon dried parsley
• 1/4 teaspoon ground black pepper
• 1/4 teaspoon dried basil
• 1/4 teaspoon garlic powder