Preheat the oven: preheat the oven to 180°C / 350-375°F / Gas Mark 4-5. Note 6
Glaze: combine teriyaki sauce, maple syrup, dark soy sauce, salt and pepper in a jug and whisk till consistently mixed.
Olive oil: spray a baking dish with olive oil or cooking spray then set aside. Note 7
Salmon fillets: use kitchen tongs to place each salmon fillet into the baking dish skin side up. Flat in one layer, touching ok, but no overlap or layering.
Teriyaki sauce: use a pastry brush to coat 1 side of each salmon fillet with the teriyaki glaze. Then use kitchen tongs to pick up each fillet and flip to the other side. Use the pastry brush to coat this second side of each fillet.
Cook: place the baking dish into the oven for 10 minutes. Allow the salmon to cook, then use oven mits to remove, place on heat proof surface and use tongs to flip fillets to skin side up. Use a pastry brush to reglaze the skin and both sides of the fillets. Return baking dish to the oven for a further 8 minutes.
Serve: to serve the salmon, plate with cooked quinoa or rice, cucumber ribbons and chopped green onions. Drizzle with remaining teriyaki maple glaze (optional).