Preheat the oven to 350ºF. Slice the baguette and arrange the slices evenly onto the baking sheet. Bake on the middle rack in the oven for about 5-7 minutes, until slightly browned but still springy.
In a medium-sized mixing bowl, toss the butter, walnuts, maple flavoring, and cinnamon* together. On a foil covered baking sheet, spread the coated walnuts out in an even layer and bake for about 5-7 minutes, until toasted. Toss midway through to avoid sticking and achieve an even toast.
Spread a small amount of cheese onto each slice of bread.
Add a small amount of toasted walnuts onto each slice of bread, and sprinkle with thyme and salt to serve.