Three Bean Salad

Ingredients

• 1 (16-ounce) can dark red kidney beans, drained
• 1 (14.5-ounce) can cut green beans, drained
• 1 (14.5-ounce) can cut golden wax beans, drained
• 1 cup sliced fresh mushrooms
• 1/2 cup chopped red bell pepper
• 2 tablespoons minced red onion
• 1/2 cup vegetable oil
• 3 tablespoons white wine vinegar
• 1 tablespoon Dijon mustard
• 2 tablespoons Greek seasoning