Averie Cooks

-1 Brown the butter* (click that link and/or read the Notes below)
-1 Pour butter into a large mixing bowl, making sure to scrape the bottom of the saucepan with a spatula and transfer any browned bits (they have wonderful flavor) from the bottom of pan into the mixing bowl. Wait momentarily before adding the egg so you don’t scramble it.
-1 Add the egg, sugars, vanilla, and whisk to combine.
-1 Add flour, cornstarch (keeps cookies soft) baking soda, salt, and stir to combine. Dough may seem crumbly yet oily, this is okay.
-1 Add the chocolate chips, peanut butter chips, and stir to combine.
-1 Using a 2-tablespoon cookie scoop, or your hands, form approximately 12 to 13 equal-sized mounds of dough, roll into balls, and flatten about halfway. Tip – Strategically place a chocolate or peanut butter chips on top of each dough mound for a visual pop.
-1 Place mounds on a large plate or tray, cover with plasticwrap, and refrigerate for at least 4 hours, up to 5 days. Do not bake with unchilled dough because cookies will bake thinner, flatter, and be more prone to spreading.
-1 Preheat oven to 350F, line a baking sheet with a Silpat or spray with cooking spray. Place dough mounds on baking sheet, spaced at least 2 inches apart (I use a half-sheet pan and bake 8 cookies per sheet).
-1 Bake for about 10 to 11 minutes (if your cookies are smaller than mine, reduce baking time) or until edges have set and tops are just set, even if slightly undercooked, pale, and glossy in the center; don’t overbake. Cookies firm up as they cool.
-1 Allow cookies to cool on baking sheet for about 10 minutes before serving. I let them cool on the baking sheet and don’t use a rack.