Process the carrots into pasta with a Julienne grater or a spiralizer. Cut the spring onions into slices. Mix the sauce ingredients in the blender and set aside.
Heat some vegetable oil in a pan. Briefly cook the carrots and the white part of the spring onions, the carrots should still be firm to the bite. Deglaze with the sauce and bring to the boil briefly until the sauce thickens. Divide between 2 bowls and garnish with the green part of the spring onions and sesame seeds.
Also works great with zucchini noodles and sweet potato noodles.