[header] How to make chocolate chip ice cream sandwiches [title] Preheat the oven to 350 degrees and lightly butter several large baking sheets. [step] In a large bowl , [title] Stir together the flour, baking powder, and salt in a large bowl. [step] In a separate bowl, stir the butter, sugars, oil, and corn syrup until combined. 
Add the egg and vanilla extract until blended, and then the flour mixture. Stir in the chocolate chips and nuts, if desired.