To prepare a wheat berry tomato salad vegan salad recipe, first you need to gather your ingredients. First, you'll need the following ingredients: 1 1/2 cups chopped fresh berries, 1 cup chopped red onion, 2 tablespoons olive oil, 1/2 teaspoon kosher salt, and 1/4 teaspoon pepper to taste. Toss all the ingredients together with your hands until everything is evenly coated. Then, add in the remaining ingredients and stir to combine. Cover the bowl with plastic wrap and refrigerate the salad for at least 1 hour before serving.