In a blender, combine rolled oats and milk. Blend on high speed for about 30 seconds or until smooth. Let sit for 10 minutes to thicken.

Add egg, baking powder, vanilla extract, and salt to the oat mixture. Blend for another 15-20 seconds until fully incorporated.

Preheat a griddle or non-stick frying pan over medium heat. Lightly grease the surface with butter or cooking spray.

Pour ¼ cup of batter onto the griddle for each pancake. Cook for about 2-3 minutes or until bubbles form.

Carefully flip each pancake and cook for an additional 2-3 minutes until golden brown.

Stack pancakes on a plate and serve warm, with optional toppings like maple syrup or fresh fruit.