In a small bowl, melt the butter and set aside to cool.
In a large bowl, whisk together the flour, sugar, brown sugar, and salt.
Make a well in the center of the four mixture and add the egg and vanilla extract. While mixing, add in the melted butter.
Knead until the dough becomes a smooth ball. Divide the dough into 1-inch size balls and refrigerate for at least 4 hours.
Press each ball into a flat disk before placing them in a hot waffle maker. Cook until golden brown and allow them to cool down on a rack.
Enjoy!!