Preheat oven to 350Β°F and line 2 baking sheets with parchment paper.
Combine toppings ingredients and set aside. Get a small dish of water and set aside.
In a large bowl using an electric mixer, beat butter and sugar 1-2 minutes until pale and creamy.
Beat in the tahini and egg until smooth.
Add flour, Gimme, and baking powder then stir until just combined. (Depending on your tahini your dough can vary in consistency, if too wet add 1-2 tablespoons flour and if too dry, add 1-2 tablespoons water.)
Scoop up a heaping tablespoon of dough, roll into a ball, roll in water, roll in toppings, then place on prepared baking sheet about 2β apart. Repeat to make about 24 cookie balls.
Before baking, gently smash dough balls then bake for 13-15 minutes until slightly dry around the edges.