Start by making your sauce. Whisk all the ingredients for the coconut-peanut sauce until smooth. Briefly set aside. (Sorry, I forgot to take a pic of the sauce bowl, but I figure you’ll live without it.)
Place the turkey, cooked quinoa, scallions, soy sauce, garlic, ginger, and fresh ground pepper in a mixing bowl. Using your hands (or a fork if you’re squeamish), gently mix until all the ingredients are well combined.
With damp hands, form the mixture into four patties about 1-inch thick. (They’ll be very soft, but that’s cool.) Gently press your thumb into the center of each patty to keep the burgers from puffing up as they cook.
Heat the sesame oil in a large non-stick skillet over medium-high heat. When hot, add the burgers to the pan, thumbprint side down. Cook for 5-6 minutes per side until cooked through. (If they start to brown too quickly, turn the heat down to medium.)
Toast your buns if you feel like it.
Time to assemble your burgers! Place each burger on a bun and top with a few slices of cucumber, avocado, and a pile of sprouts. Drizzle generously with peanut sauce, and serve warm.