Steps
1. In a mixing bowl, combine rolled oats, baking powder, and salt.
2. Add in Greek yogurt, egg, almond milk, and vanilla extract. Stir until a smooth batter forms.
3. Gently fold in the frozen mixed berries.
4. Cover the bowl and refrigerate the batter overnight (at least 8 hours).
5. The next morning, preheat a non-stick skillet over medium heat.
6. Pour ¼ cup of batter onto the skillet for each pancake.
7. Cook for 3-4 minutes until bubbles form on the surface, then flip and cook an additional 2-3 minutes until golden brown.
8. Serve warm, optionally with a dollop of yogurt or fresh berries.