Preheat the oven to 176° C (350° F). Line 2 baking sheets with parchment paper.
In a small bowl, stir together the flour, baking powder, and salt.
Melt the butter, semi-sweet chocolate, and dark chocolate in a double boiler or microwave. Stir until smooth and let cool slightly at room temperature.
In a large bowl with an electric mixer, beat sugar, eggs, and vanilla on high speed until smooth and fluffy for 2 to 5 minutes. With careful folding motions, add the butter and chocolate mixture. Add the flour mixture and beat until fully incorporated.
Stir all the chocolate chips in a bowl; reserve about a quarter of the mixture in another bowl. Fold the large chocolate chip mixture into the previously beaten mixture. Portion with a tablespoon onto the baking sheets. Take the reserved chocolate chips and press at least one of each type on top of the cookies, so that the white, dark, and milk chocolate can be seen once baked.
Bake until the tops feel dry but are soft and creamy inside, for about 10 minutes. The edges should be slightly firmer than the rest of the cookie. They will become much harder after cooling, be careful not to overbake. Let cool for 1 minute on the baking sheet and then transfer to a rack to cool completely. Ensure that the cookies remain flat while cooling. They are very delicate when hot.
Nutritional Information
* * Information per 100g serving, percentage of daily values based on a 2,000 calorie diet.
Do you want to know what other nutrients this or other recipes have?