Thank you for this recipe. I tried it when a Belgian friend of mine was coming to visit me. I have also been to Belgium and tasted the original Speculaas made by a famous cafeteria in Bryssels. So, I baked the dough in two parts. In the first part I liked the texture of the cookies baked according to this recipe. But I thought there was way too much lemon peel. One tablespoon is more than enough! In my opinion there was also too less spices! So I added 1 tsp more of each. Finally I decided to add some white sugar in addition to the brown sugar to make it more tastefull. So I liked better the second, adapted part of the cookie dough.