Soft and chewy, no-bake chocolate oatmeal cookie bars are a dessert loved by the whole family. These rich and dense cookies take just 5 minutes of prep time.
Add milk, sugar, and butter to a saucepan. Bring to a boil, constantly stirring. Allow to boil for one minute and then remove the mixture from the heat.
Add chocolate chips and stir well. Add pecans, oats, graham cracker crumbs, and vanilla. Stir well.
Pour mixture into the 9 x 13 baking dish.
Allow to completely cool, about 1-2 hours. Slice into cookie bars and serve.