No Bake Chocolate Oat Bars

Chocolate Oat Bars That Require No Baking: The Recipe
Coat a square pan that measures 9×9 inches with fat.
Preheat a large saucepan over medium heat and melt the butter. Mix in the vanilla and brown sugar. Toss in the oats. Blend the components by cooking them for 2–3 minutes over low heat. In the bottom of the pan that has been prepared, press half of the mixture. Hang on to half of it for garnishing.
Then, in a small heavy saucepan, melt the peanut butter and chocolate chips over low heat, stirring constantly, until smooth. Evenly distribute the chocolate mixture over the crust in the pan using a knife or the back of a spoon.
Scatter the leftover oat mixture over the chocolate layer and gently press it down. Refrigerate for at least two or three hours, or overnight, covered. Cool completely before slicing into bars.