Preheat oven to 350°F / 175°C. Line baking sheets with baking parchment or silicone baking sheets.
In a mixing bowl, combine the tahini, oat flour, maple syrup, salt and lemon zest.
½ cup + 2 tablespoons (150 ml) tahini, ½ cup (60 g) oat flour, 7 tablespoons (105 ml) maple syrup, ¼ teaspoon salt, 1 tablespoon lemon zest
Stir vigorously until smooth. Continue to mix until the dough becomes firm and holds its shape.
Fill a shallow bowl with the sesame seeds.
4 tablespoons (35 g) sesame seeds
Scoop the dough into 1 tablespoon portions, then roll into a ball using your hands.
Roll each ball in the sesame seeds and place them on a baking sheet about 3 inches or 8 cm apart.
Flatten each of the cookies using the base of a glass or jar to about ¼ inch or 6mm thick.
Bake for 12 minutes or until the edges are golden brown.
Remove from the oven and cool for at least 5 minutes on the baking sheet before transferring to a cooling rack to cool completely.