[ { "@type": "HowToStep", "text": "Pre-heat oven to 375°F and line a few baking sheets with parchment paper. (I bake them at 350°F in a convection oven)" }, { "@type": "HowToStep", "text": "In a large bowl, whisk together the flour, baking soda, and cream of tartar. Set aside." }, { "@type": "HowToStep", "text": "In the bowl of a stand mixer fitted with the paddle attachment, cream together the butter, oil, and sugars on medium-high speed until light and fluffy, scraping the sides as necessary." }, { "@type": "HowToStep", "text": "Reduce speed to medium and add the eggs, one at a time, mixing just until combined." }, { "@type": "HowToStep", "text": "Add the vanilla and mix until combined." }, { "@type": "HowToStep", "text": "Reduce speed to low and add the flour in three additions, scraping down the sides as necessary." }, { "@type": "HowToStep", "text": "Using a scoop that holds 2 tablespoons of dough, drop batter onto the baking sheet, spacing at least an inch apart." }, { "@type": "HowToStep", "text": "Bake for 8 to 10 minutes, just until the edges begin to darken." }, { "@type": "HowToStep", "text": "Let cool on baking sheet." } ]