Nutella Pretzels Cupcakes

- Cupcake: All-purpose flour, kosher granulated sugar, unsalted butter, cocoa powder, eggs, whole milk, baking powder, baking soda, salt, pure vanilla extract.

- Filling: Nutella and crushed pretzel mixture.

- Frosting: Nutella-infused buttercream made by blending unsalted butter, powdered sugar, and Nutella.

-Garnish: Topped with a whole pretzel or a sprinkle of crushed pretzels.