Preheat your oven to 425°F (220°C) and line a baking sheet with parchment paper.

In a large mixing bowl, whisk together flour, baking powder, baking soda, salt, and sugar.

Cut the cold unsalted butter into small cubes and incorporate it into the flour mixture until it resembles coarse crumbs.

Stir in the buttermilk and vanilla extract until just combined, then fold in the diced strawberries.

Turn the dough onto a lightly floured surface and roll it out to about 1 inch thick. Cut out shapes with a biscuit cutter and place them on the baking sheet.

Brush the tops with melted butter and sprinkle with some sugar, then bake for 14 to 17 minutes until golden brown.

While the biscuits cool, whisk together powdered sugar, milk, and more vanilla extract to create a glaze.

Drizzle the glaze over the warm biscuits and serve immediately.