Preheat oven to 350. Brush 12-cup muffin tin with the oil.
Combine remaining ingredients in a bowl. With an ice cream scoop or spoon, spoon dough into each muffin cup, filling about half full. (Or you can drop spoonfuls of dough onto a greased baking sheet.) Bake 15 to 20 minutes, until golden brown. Transfer to a wire rack to cool slightly, then invert biscuits onto the rack. Serve warm.