Add the milk powder to a pan on medium high heat. Stir and toast the milk powder until it becomes golden brown and has a nutty aroma. Make sure to keep it moving so it doesn’t burn. It might clump up a bit here and there but it’s ok, just keep going. Once toasted, transfer to a bowl and let it cool.
3 tablespoon milk powder
In a large bowl, beat together the butter and both sugars until combined and light. Whisk in the egg, egg yolk and vanilla extract until smooth.
½ cup white granulated sugar, ¾ cup brown sugar, ¾ cup butter, melted & cooled, 1 large egg, 1 large egg yolk, 1 teaspoon vanilla extract
Add in the toasted milk powder and about 125g of the chocolate (leaving some for pressing on top of the cookies) and mix until combined.
In a small bowl, mix together the flour, baking soda, baking powder and salt.
½ teaspoon salt, 1 ⅔ cup all-purpose flour, ¼ teaspoon baking powder, ¾ teaspoon baking soda
Add the dry ingredients to the wet ingredients and mix using a spatula. Don’t over mix - stop when combined and you don’t see any streaks of flour.
Scoop the cookie dough into a large container or large tray using a 2 inch cookie scoop or 1.5 tbsp. Use the remaining chocolate and press it on the surface of the cookie ball.
Cover and refrigerate the cookie balls for at least 30-60 minutes. Preheat the oven in the last 15-20 minutes the cookies are in the fridge. Line a large baking/cookie sheet with parchment paper.
Place the cookie balls 1.5-2 inch apart from each other and bake for 12-14 minutes. Or until the edges are set and are golden brown, along with the bottom. The cookies will still be soft in the middle, but will finish cooking from the residual heat. If you want a crisper cookie, bake them near the 14 minute mark, or until end edges and bottom are a bit more deeper golden brown.
Immediately hit them with some flakey salt and use a large round cup or cookie cutter to ease them into a smoother circle shape. The diameter of the cup or cookie cutter should be bigger then the cookie and just move it in a circular motion.
Let them cool and enjoy!
