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Export 7 ingredients for grocery delivery
Step 1
Preheat the oven to 375°F. In a large bowl, use a hand mixer or stand mixer to beat the butter, oil and sugars. Beat in the eggs until well blended. Beat in the vanilla. In a separate bowl, whisk together the flour, baking soda and cream of tartar. Gradually beat the dry mixture into the creamed mixture.
Step 2
Drop the dough by small teaspoonfuls onto ungreased baking sheets. Bake the cookies until they’re lightly browned, 8 to 10 minutes. Remove the cookies to wire racks, and cool to room temperature.