Preheat the oven to 350F then line a baking sheet with parchement paper and set it aside.
Cream the butter, granulated sugar, and brown sugar together until smooth and creamy.
Whisk in the egg, the butter vanilla emulsion, butter flavoring (optional), and mix until combined.
Mix in the flour, baking powder, and salt until the flour mixture disappears. Don't overmix your dough. Then using a large cookie scooper scoop out 6 equally sized cookie dough balls.
Use the back of a 1 tablespoon measuring scoop, make an indentation in the cookie then fill with about ½ tablespoon of strawberry jam. Seal the edges carefully, then gently roll the cookie dough into a ball. Place on the baking sheet, then repeat the process.
Bake the cookies for 10 minutes, and let the cookies cool down on a cooling rack before topping with the melted white chocolate and oil mixture. Add sprinkles and enjoy.