01 -
Warm up your oven to 350°F and place parchment paper on a large baking tray.
02 -
Use a stand or hand mixer to combine butter with both sugars until it’s creamy. Stir in the vanilla, egg yolk, and food coloring until it’s mixed well.
03 -
Gradually mix in cocoa, baking powder, salt, and flour until the dough is well mixed and holds together.
04 -
Divide the dough into 18 balls, roll them in your hands, and cover each one completely with red sugar.
05 -
Put them in the oven for 10 minutes. Push a single chocolate kiss into each one while still hot. Leave on the tray for 10 minutes, then transfer to a wire rack to cool.