01 - Whisk together flour, sugar, baking powder, baking soda, salt, and cinnamon in a large bowl until thoroughly combined.
02 - In a separate bowl, whisk milk, eggs, melted butter, and vanilla extract until smooth and fully incorporated.
03 - Pour wet ingredients into dry ingredients and mix gently until just combined. Avoid overmixing to maintain fluffy texture. Let batter rest for 5 minutes to thicken.
04 - Heat a non-stick skillet or griddle over medium heat and lightly coat with butter.
05 - Pour 1/4 cup batter per pancake onto the griddle. Cook until bubbles form on the surface and edges appear set, then flip and cook until golden brown, approximately 2-3 minutes per side.
06 - Combine 1/4 cup sugar with 2 teaspoons cinnamon in a small bowl, mixing until evenly distributed.
07 - Brush warm pancakes lightly with melted butter, then generously dust both sides with the cinnamon sugar mixture while still warm.
08 - Place chopped chocolate and cream in a microwave-safe bowl. Microwave in 20-second intervals, stirring between each, until chocolate melts completely and mixture becomes smooth and glossy.
09 - Stack coated pancakes on plates and drizzle with warm chocolate sauce. Serve immediately with additional sauce on the side for dipping.