In a bowl, stir together the butter, stevia sweetener and softened cream cheese.
Stir the vanilla extract and egg. Stir until all ingredients combine well.
Add the coconut flour, salt, and baking powder; continue to stir until combined well.
Place the sticky batter onto a plate lined with the wax or parchment paper.
Mold into a log shape, using the paper to roll out and wrap the paper around the dough.
Refrigerate for at least an hour.
Preheat oven to 350F/180 C.
Line a baking tray with parchment paper.
Remove the dough from the fridge and use a sharp knife to cut any shape of cookie you like.
Place cookies on the baking tray, and sprinkle with cheddar cheese (optional).
Bake for 18 minutes or until golden.
Serve hot or cold.
Keep refrigerated into closed container up to 4 to 5 days.