Oatmeal Cookie Sandwiches  | 
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                                            Prep Time: 0 Minutes Cook Time: 0 Minutes  | 
                                            Ready In: 0 Minutes Servings: 1  | 
                                         
                                        
                                     
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                    Jane Shapton suggests sandwiching these thin, crisp oatmeal cookies around chocolate or peppermint frozen yogurt; we thought they were excellent filled with a chocolate-mint ganache. The filling is easiest to spread when slightly warm. If making it up to 3 days ahead, cover and chill, then stir gently in a bowl set over a pan of barely simmering water to rewarm. Fill cookies the day you serve them. Ingredients: 
                    
                        
                                                about 1/2 cup (1/4 lb.) butter or margarine  |  
                                                3/4 cup firmly packed brown sugar  |  
                                                1 1/2 cups quick-cooking rolled oats  |  
                                                1 tablespoon all-purpose flour  |  
                                                1 teaspoon baking powder  |  
                                                1/4 teaspoon salt  |  
                                                1 large egg  |  
                                                1 tablespoon vanilla  |  
                                                chocolate-mint ganache  |  
                                                
                     
                    Directions: 
                    
                        
                            
                                1. In a 2- to 3-quart pan over medium heat, stir 1/2 cup butter and the brown sugar frequently until butter is melted and mixture is smooth, about 3 minutes. 2. Meanwhile, in a large bowl, mix oats, flour, baking powder, and salt. Add butter mixture; stir until well blended. 3. Add egg and vanilla to oat mixture and stir until well blended. 4. Drop dough in 1-teaspoon portions about 2 inches apart onto cooking parchment-lined or buttered and floured 12- by 15-inch baking sheets. 5. Bake cookies in a 350° regular or convection oven until browned, 8 to 10 minutes; if baking two sheets at once in one oven, switch their positions halfway through baking. Let cookies cool on sheets for 5 minutes, then use a wide spatula to transfer to racks to cool completely. 6. Spread the bottom of each of half the cookies with about 1 tablespoon Chocolate-Mint Ganache. Top each with a second cookie, bottom toward filling, and press gently to squeeze filling to edges of sandwich. 7. Chocolate-Mint Ganache. In a heatproof bowl set over (but not touching) barely simmering water in a pan, occasionally stir 3 cups chopped semisweet chocolate (18 oz.) and 1/4 cup whipping cream until chocolate is melted and mixture is smooth. Remove from heat and stir in 3/4 teaspoon peppermint extract. Let cool until thick but not firm, about 15 minutes, and use immediately (see note). 8. Nutritional analysis per sandwich.                              | 
                         
                         
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