In your mixing bowl, crack in the eggs and add the pumpkin puree along with your pumpkin pie spice. Whisk everything together until it's completely smooth with no streaks of egg or pumpkin left. The batter will be thinner than a traditional pancake batter, and that's completely normal here.
Set your skillet over medium-low heat and add the butter or oil, letting it melt and coat the surface evenly. A lower heat matters more than usual for this recipe, since these pancakes are more delicate than flour-based ones. Give the pan a minute to fully heat before adding any batter.
Pour small portions of batter onto the pan, using about two to three tablespoons per pancake so they stay manageable to flip. Let each one cook for about two minutes until the edges look set and small bubbles form on top. Resist the urge to move them too soon.
Using a thin spatula, carefully flip each pancake in one smooth motion. Cook the other side for another one to two minutes, until it's lightly golden and cooked through. Because there's no flour, these need a gentler touch than regular pancakes.
Transfer the finished pancakes to a plate and serve them right away while they're still warm. I like stacking mine three high with a little something on top, which I'll get into in the serving section below