Preheat the oven to 180°C (356°F).
In a bowl, mix whole wheat flour, baking powder, and salt.
Add unsalted butter and rub with your hands until the mixture becomes crumbly.
Add Greek yogurt, milk, and stevia, then mix until the dough comes together into a single mass.
Roll the dough thickly and cut into desired shapes.
Place them on a baking sheet lined with parchment paper.
Bake in the 180°C oven for 18-20 minutes.