INSTRUCTIONS
1. Preheat oven to 350°F. In a large bowl, cream butter and sugars until light and fluffy. Beat in egg and vanilla. In another bowl, whisk flour, baking soda, salt and cinnamon; gradually beat into creamed mixture. Stir in oats and chocolate.
2. Shape dough into twenty 1-1/4-in. balls. Place 2-1/2 in. apart on ungreased baking sheets; flatten slightly with bottom of a glass dipped in sugar, smoothing edges if necessary. Bake until golden brown, 10-13 minutes. Transfer from pans to wire racks to cool completely.
3. To assemble, place about ¼ cup ice cream on bottom of a cookie; sprinkle with 1 teaspoon toffee bits. Top with a second cookie, pressing gently to flatten ice cream. Place on a baking sheet; freeze overnight or until firm. Repeat with remaining cookies and ice cream. For longer storage, wrap frozen sandwiches individually and return to freezer.
