Tempeh-Walnut Burgers | Food Stuff

Ingredients

• ½ cup finely chopped celery
• 2 tsp. umeboshi paste, optional
• 1 Tbs. Dijon mustard
• 8 whole-wheat English muffins or buns, split
• 1 Tbs. minced fresh rosemary
• 3 medium cloves garlic, minced
• ½ cup (packed) pitted chopped kalamata olives
• 1 Tbs. tamari or reduced-sodium soy sauce
• 1 Tbs. olive oil, plus additional for brushing
• ½ cup finely chopped onion
• ¼ tsp. freshly ground pepper
• ½ cup finely diced red bell pepper
• ½ tsp. salt
• 2 8-oz. pkgs. tempeh, each cut in half
• 1 ½ cups walnuts