Whisk flour, sugar, baking powder, baking soda, and salt in a large bowl. Create a well in the center for wet ingredients.

In a medium bowl, whisk buttermilk, egg, melted butter, and vanilla until smooth.

Pour wet ingredients into the dry ingredient well and stir gently just until combined. Let batter rest for 5-10 minutes.

Heat a griddle over medium heat for 3-4 minutes. Grease lightly with butter or cooking spray.

Pour 1/4 cup of batter per pancake onto the hot griddle, leaving space between pancakes.

Cook until bubbles form on the surface, about 2-3 minutes, then flip and cook for 1-2 minutes more.

Transfer cooked pancakes to a warm plate in a 200°F oven until ready to serve.

Stack 2-3 pancakes per plate, drizzle with warm Nutella, and add whipped cream on top.

Garnish with strawberries, bananas, chopped hazelnuts, and powdered sugar as desired.