Sweet Potato Turkey Burgers

Ingredients (18)

• 1 sweet potato
• 2 small chopped onions
• 3 Tbsp. olive oil
• 2 lbs.  ground turkey
• 2 Tbsp. crushed garlic
• 3 tsp. paprika
• 2 1/2 tsp. white pepper
• 2 tsp. cumin
• 3 tsp. salt
• 1 tsp. cinnamon
• 1 cup cooked couscous
• 1 cup chicken stock
• 2 Tbsp. butter
• Sliced red onion
• Avocado
• Tomato
• Sharp cheddar cheese
• Buns or lettuce for bun substitute