In the bowl of a food processor, pulse together the cheese and the butter. Add in the flour, garlic, onion powder, paprika, salt and baking powder and pulse until the mixture looks like wet sand. Drizzle the milk over the top and pulse until a rough dough is formed, about five or six pulses. (Alternatively, work the mixture together in a large bowl until it comes together and feels similar to a pie crust.)
Form mixture into one-inch balls. (If using, place half a stuffed olive into the center of each ball). Place balls onto cookie sheet lined with parchment. Refrigerate for one hour.
Preheat oven to 400 degrees. Bake puffs for 17-20 minutes or until golden brown.
Notes
** To make ahead, place unbaked puffs onto cookie sheet and freeze until firm. Store in freezer bags. To bake, defrost on counter for about 10 minutes and bake as directed.