In a small bowl, whisk together flour, sugar, baking powder, and salt; set aside.

In a medium bowl, whisk together buttermilk, vegetable oil, melted butter, and egg.

Add dry ingredients to the buttermilk mixture; whisk until just moistened. (A few small lumps are fine.)

Heat a large skillet or griddle over medium heat and spray with olive oil spray.

Spoon 1/4 cup of batter onto the skillet for each pancake.

Cook until the surface of the pancakes has some bubbles and a few have burst (about 1-2 minutes).

Carefully flip the pancakes with a thin spatula and cook until browned on the other side (another 1-2 minutes).

Serve immediately or keep warm in the oven.

Top with whipped cream and more sprinkles for extra fun!