In a mixing bowl, whisk together the pancake mix, milk, egg, cocoa powder, and granulated sugar until the batter is smooth and chocolatey.
Preheat your ebelskiver pan over medium heat and lightly brush each well with vegetable oil.
Pour a small amount of batter into each well, then place a few chocolate chips in the center of the batter.
Cover the chocolate chips with more batter, filling the wells three-quarters full.
Allow the ebelskiver to cook until the edges start to set, then gently flip them over to cook the other side.
Cook until the ebelskiver are fully cooked and the chocolate inside is melted.
Transfer the chocolate-stuffed ebelskiver to a plate and serve them warm. Top with a sprinkle of powdered sugar or a dollop of whipped cream for extra decadence. Enjoy the chocolatey delight!