2cupscrushed chocolate sandwich cookiesI used Oreos
1/2cupmini chocolate chips
Using a hand mixer or stand mixer, whip heavy cream until stiff peaks form. In a separate large bowl, combine sweetened condensed milk and peppermint extract. Fold half of the whipped cream into the condensed milk mixture, then fold in the other half. Stir in most of the crushed cookies and chocolate chips (reserving some for the top of the ice cream, optional). Pour the ice cream into a loaf pan and sprinkle the reserved cookies and chocolate chips on top. Cover and freeze until set, at least 6 hours, preferably overnight.
Feel free to increase the peppermint extract for a stronger mint flavor. You can taste the ice cream base before adding it to the loaf pan to determine if you'd like it stronger.