Preheat the oven to 375 degrees F. Spray a baking sheet with cooking spray.
Cut the wonton wrappers in half on the diagonal so you wind up with 20 triangles. In a medium sized bowl, toss the triangles gently with the canola oil, separating the pieces gently so each piece is coated with oil.
Place the triangles onto the baking sheet in a single layer. Bake for about 10 minutes, until they are golden brown and crisped.
Dust with confectioners' sugar, and serve. Crisps will keep up to 4 days in an airtight container.