Chocolate Oatmeal Sandwich Cookies

Ingredients:
• 2½ cups plus 2 tablespoons butter, softened
• 1 cup sugar
• 1½ cups brown sugar
• 2 eggs
• 4 teaspoons vanilla, divided
• 2½ cups flour
• ½ cup cocoa
• 2 teaspoons baking soda
• 1 teaspoon salt
• 6 cups quick oats
• 1 (12 ounce) package semisweet chocolate chips
• 1 (14 ounce) can sweetened condensed milk

Preparation:
Preheat oven to 375 degrees. Beat 2½ cups butter and sugars until fluffy. Beat in eggs and 3 teaspoons vanilla. Combine flour, cocoa, baking soda, and salt. Add to creamed mixture. Stir in oats. Drop by tablespoons onto ungreased cookie sheets. Bake for 10 minutes. Cool. In saucepan, combine chips, condensed milk, 2 tablespoons butter, and 1 teaspoon vanilla. Over medium heat, cook and stir until chips are melted. Immediately spread filling between cooled cookies.

This recipe was published in 'Everyday chocolate 120 Tasty Recipes - p42'.