Preheat the oven to 350°F (175°C) and grease a baking pan.

In a mixing bowl, combine melted butter and brown sugar. Mix until smooth.

Add eggs and vanilla extract, and mix until fully incorporated.

In a separate bowl, whisk together flour, baking powder, and salt.

Gradually add the dry ingredients to the wet ingredients, mixing until just combined.

Fold in the fresh cherries gently.

Pour the batter into the prepared baking pan and spread evenly.

Bake in the preheated oven for 25-30 minutes or until a toothpick inserted comes out clean.

Allow to cool before cutting into squares and serving.