In a medium bowl, mix together the flour, baking powder, salt and sugar. Add in the milk, yogurt, eggs and vanilla extract. Mix until smooth.
Fold in the crushed Oreos.
Heat a large skillet over medium heat and spray with cooking spray. Scoop ⅓ cup of batter for each pancake, and flip when bubbles are covering the surface of the pancake. Cook the other side until it is golden.