Add the softened butter and sugar to a mixing bowl or bowl of a stand mixer.
1/2 cup room temperature butter, 1 cup white granulated sugar
Cream together for 1 minute.
Add in the remaining wet ingredients and cream together until well combined, about 30 seconds. Leave out the lemon extract for now.
1 egg, 1 tablespoon lemon juice, 1-2 tablespoons lemon zest, 1 teaspoon vanilla extract, optional: 1/2 teaspoon lemon extract
Add in the dry ingredients aside from the raspberries and beat together until a dough forms. Taste and add more lemon zest or the lemon extract if desired.
2 1/4 cups oat flour, 1 1/2 tablespoons cornstarch, 1/8 teaspoon baking soda, 1/4 teaspoon baking powder, 1/4 teaspoon salt
Fold in the raspberries, mixing just until combined so the raspberries don't completely bleed into the dough.
1 cup frozen raspberries
Use a 2 tablespoon scoop and scoop onto a baking sheet lined with parchment paper.
Chill for 1 hour.
When you have about 15-20 minutes left, preheat the oven to 350 Fahrenheit.
Once the dough is done chilling, bake for 14-17 minutes or until the cookies have spread and the edges are just golden brown.
Let cool on the baking sheet for about 15 minutes, then transfer to a wire rack to finish cooling.
These cookies are intended to be very thick, soft and pillowy, but if you prefer them a bit crispier, simply bake for longer.