Preheat the oven to 350°. Using a pastry brush, grease an 8-by-11-inch baking dish with some of the melted butter. Spoon 1 tablespoon of the vegetable filling into the center of each wonton skin and roll up to form a log. Place the cannelloni in a single layer, just touching, in the prepared baking dish. Drizzle with the remaining melted butter and 2 tablespoons of the Mushroom Broth. Bake the cannelloni for 10 minutes, or until cooked through.