01 - Combine ground turkey or chicken, egg, oats, red onion, Dijon mustard, garlic, parsley, smoked paprika, salt, and black pepper in a large bowl. Mix gently until just combined—avoid overworking the meat to maintain texture.
02 - Divide the mixture into 4 equal portions and form each into a patty measuring approximately 1/2 inch thick. Ensure uniform thickness for even cooking.
03 - Heat a nonstick skillet or grill over medium-high heat. Lightly oil the surface if necessary to prevent sticking.
04 - Place patties on the heated surface and cook for 4-5 minutes per side until golden brown. Verify doneness with an internal temperature of 165°F using a meat thermometer.
05 - Lightly toast whole wheat buns on the grill or in a toaster for added texture and to prevent sogginess.
06 - Layer each burger starting with a lettuce leaf on the bottom bun, followed by the cooked patty, Greek yogurt, tomato slice, red onion, avocado if desired, and finish with the top bun.