In a bowl, stir together flour, yeast/baking powder, salt, sesame seeds and pepper
Add the butter and mix by hand. The dough should be quite sandy/crumbly
Dig a well in the middle of the dough and pour the cold water. Add more flour if needed
Form a ball and chill in the refrigerator for 30 minutes
Roll out the dough and cut square or round biscuits with a cookie cutter
Bake for 20 minutes and let cool
Goat cheese filling
Whisk together, cheese, hazelnuts, thyme, salt and pepper.
To make the sandwich biscuits: once the sesame biscuits are cool, spread goat cheese on one biscuit then top with another.
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