3 tsp double-acting baking powder
1 tsp salt
1/3 cup shortening
1/2 cup milk
2 tbsp sugar
1 tsp cinnamon, or more as desired
Preheat oven to 425 degrees.
In a bowl, mix the flour, baking powder, and salt together. Cut the shortening into the flour mixture using a pastry blender or two butter knives until the mixture looks like coarse meal. Add milk and stir just enough for the dough to hold together. Place dough on a lightly floured surface and knead lightly. Roll the dough out to a 3/4-inch thickness. Cut with a floured biscuit cutter or a glass, cutting straight down without twisting. Place biscuits on a parchment-lined baking sheet, sprinkle with the cinnamon and sugar that has been stirred together in a small bowl. Bake at 425 degrees for 6 to 9 minutes.