Lightly spoon flour into a dry measuring cup; level with a knife. Combine flour and next 4 ingredients (flour through salt) in a large bowl, and make a well in center of mixture. Combine buttermilk, oil, and egg; add to flour mixture, stirring until smooth.
Spoon about 1/4 cup batter onto a hot nonstick griddle or nonstick skillet coated with cooking spray. Turn pancakes when tops are covered with bubbles and edges look cooked.