Veg Greek Meatballs with Feta Cheese

Name: Veg Greek Meatballs with Feta Cheese
Ingredients: 3 8-oz. pkg. plain seitan, rinsed and drained; 1 8-oz. pkg. low-fat cottage cheese or ricotta; 1 cup unseasoned breadcrumbs; 1 small onion, finely chopped (1 cup); 1 large egg, lightly beaten; 3 Tbs. lemon juice; 2 Tbs. finely chopped fresh dill; 2 Tbs. finely chopped fresh mint and/or parsley, plus more for garnish; 2 tsp. ground cumin; 1 tsp. baking soda; 1/2 tsp. allspice; 1/4 tsp. ground cinnamon; 2 Tbs. olive oil; 1 25-oz. jar tomato sauce; 1 cup crumbled feta cheese, optional