Chill your butter in the freezer for 20 minutes. This will allow you to cut it into little pieces and not melt too fast.
Preheat oven to 425°F
Mix cream of tartar with milk and let it sit until it curdles (about 1 minute)
Line cookie sheet with parchment paper if you have it
Add flour, baking powder, baking soda, and salt into bowl and mix
Add room temperature butter to dry mix
Cut your chilled butter up into tiny pieces like the size of a pea
Add buttermilk substitute and cheese into the bowl
Mix to combine (do not over mix or mix vigorously, as that will create gluten which we do not want) .
Spoon about ⅓ cup size ball of dough onto cookie sheet, spacing 2 inches apart
Bake for 425°F for 12 minutes or until the tops are beginning to just turn lightly golden brown.
Serve warm and enjoy.