I am a fan of semi-homemade goodies. It makes a mid-week treat easy even if you've had a hard day at work or with the kiddos.
I recently used a Betty Crocker's Peanut Butter cookie mix as a base with some salted-caramel Nutella to make some sweet and salty chewy delights.
Following the ratios on the bag, replace milk for water and butter for oil.
Add the egg and mix well.
Put 1/2 cup of Nutella in a microwavable cup and put in microwave for 20 seconds.
Drizzle over cookie mix and gently fold (think marble cake).