In a medium mixing bowl, combine the ground turkey, cooked brown rice, tamari, garlic powder, and onion powder until well incorporated.
Divide the mixture into two equal portions and shape them into thick patties, pressing firmly so the rice binds with the meat.
Heat the olive oil in a non-stick skillet over medium-high heat.
Place the patties in the skillet and cook for 5 to 6 minutes per side, or until the exterior is golden brown and the internal temperature reaches 165°F.
While the burgers are cooking, prepare the garden salad by combining the mixed baby greens, sliced cucumber, and halved cherry tomatoes in a large bowl.
In a small jar or bowl, whisk together the lemon juice, Dijon mustard, sea salt, and black pepper to create a zesty dressing.
Toss the salad with the dressing until evenly coated.
Serve the hot savory rice burgers immediately alongside the fresh garden salad.