bean salad recipe

Ingredients: 3 (15oz) cans of beans (drained and rinsed, or use 4 1/2 cups cooked beans) 1/2 medium onion, finely chopped (about 3/4 cup) 1 medium cucumber, finely chopped (about 2 cups) 3 tablespoons capers, drained 1/2 cup fresh parsley, finely chopped 3/4 teaspoon dried oregano 1/4 cup red wine vinegar 1/4 cup extra-virgin olive oil 1 teaspoon Dijon mustard 2 teaspoons maple syrup (or honey, optional) 3/4 teaspoon fine sea salt (plus more to taste) 1/4 teaspoon fresh ground black pepper