This is the only recipe I've ever used for tuiles and it's worked every time - completely different than yours tho.
½ cup all-purpose flour
1 tsp ground ginger
¼ cup butter
1/3 cup superfine sugar
1/3 cup golden syrup (corn syrup)
2 tsp brandy (whatever brand is good for you)
Heat oven to 350F. Sift the flour and ground ginger. Heat the butter, sugar and corn syrup in a small saucepan. Add the flour to the butter mix and combine well. Add the brandy and incorporate.
On a parchment lined sheet, spoon 1 Tbsp. sized portions of the batter, making sure they are at least 2" apart. Bake for at least 5-10 minutes, looking for the wafers to spread and turn brown. Remove from oven and let cool for about 10 seconds. Use a spatula to remove from sheet and place over lightly oiled flute pans, or anything that will allow for a cup shaped finished product. press down to create shape and let cool for 10 seconds. Remove and repeat until batter is used up (do 4 or 6 at a time)
an old cook, still learning new tricks!