Mix dry ingredients: In a medium bowl, whisk together flour, cornmeal, sugar, ginger, and cinnamon.
Prepare the egg: Separate the egg. Beat the yolk until smooth and creamy. Beat the white separately until soft peaks form and it looks light and frothy.
Make the batter: Stir the pumpkin and egg yolk into the dry ingredients. Add the milk gradually, mixing until you have a smooth, pourable batter. Fold in the beaten egg white gently to keep the batter light. If batter feels too thick, add a splash more milk.
Cook the pancakes: Heat a skillet or griddle over medium heat and melt a pat of butter. Drop batter by spoonfuls or small ladles, cooking until bubbles form on the surface and edges begin to set, about 2–3 minutes. Flip and cook the other side until golden brown.
Serve: Serve warm, sprinkled with cinnamon sugar or topped with extra butter.