Fancy Vegan Meatballs

Ingredients

• ¼ cup sun-dried tomatoes (not oil-packed) (about 4 to 5 halves)
• 1 medium onion, diced (2 cups)
• 8 ounces mushrooms, diced (3 cups)
• 6 cloves garlic, minced
• 1 tablespoon finely chopped fresh sage
• 1 15-ounce can white beans, rinsed and drained (1½ cups)
• 1 cup cooked brown rice
• 2 tablespoons flaxseed meal
• 2 tablespoons oat flour
• 1 tablespoon white wine vinegar
• Sea salt
• freshly ground black pepper
• ¼ cup raw cashews
• 2 tablespoons nutritional yeast
• 1 teaspoon white miso paste
• 1½ cups purchased oil-free marinara sauce
• 12 to 16 leaves romaine lettuce