Preheat the oven to 180°C/350°F/gas 4. Place the salmon fillets skin-side down on a non-stick ovenproof dish. Smear the butter over the salmon fillets. Mix the honey, soy sauce and lime juice in a small bowl. Pour half of this dressing over the salmon fillets. Place the salmon fillets in the oven and roast them for 15 minutes or until cooked through.
Meanwhile, melt the coconut oil in a large pan over a medium-high heat. Add all of the vegetables and stir-fry for about 5 minutes. Add the noodles and the remaining dressing. Stir well and cook for 3 minutes or until the noodles are heated through.
Divide the stir-fry between warmed serving bowls. Top with the roasted salmon and serve.