Mediterranean Triple-Bean Salad

Ingredients

• 1/2 teaspoon dried oregano
• 1/4 cup red wine vinegar
• 1 (15-ounce) can great northern beans
• 1/2 teaspoon black pepper
• 1/4 cup fresh parsley
• 1/2 teaspoon red pepper flakes (optional)
• 1 (15-ounce) can black beans
• 1 (15-ounce) can chickpeas
• 1/4 cup fresh basil
• 1 clove garlic, minced
• 1 teaspoon salt
• 3 tablespoons extra-virgin olive oil