Prep Batter: In a large mixing bowl, whisk together flour, brown sugar, baking powder, baking soda, and ground cinnamon until well combined.

Combine Wet Ingredients: In a separate bowl, mix buttermilk, vanilla extract, and beaten egg until fully blended.

Combine Mixtures: Gently pour the wet ingredients into the dry mixture, stirring until just combined.

Preheat Griddle: Heat a griddle over medium heat for about 5 minutes to cook pancakes evenly.

Cook Pancakes: Pour about 1/4 cup of batter onto the griddle, cooking until bubbles form and flipping until golden brown.

Cinnamon Sugar Coating: Brush with melted butter and sprinkle with cinnamon sugar immediately after cooking.

Prepare Vanilla Sauce: In a saucepan, combine granulated sugar and cornstarch, whisk in half-and-half, and simmer until thickened.

Serve: Stack pancakes on a plate, drizzle with creamy vanilla sauce, and serve with fresh fruit or bacon.