Delicious! Be careful 180 C is 350 F degrees.... I doubled the chocolate chips. A trick to pack the bars well, use a piece of parchment paper and press hard on the mixture before you put in the oven. 25 minutes and they were done.
I made this recipe today with my "little chef" assistants. The bars themselves taste wonderful, however, I had problems with them setting. After baking the indicated amount of time/temp the bars were soupy on the bottom. I followed the directions with one exception, I used low fat s c milk instead of regular. I ended up baking the bars about 60 minutes until the liquid was absorbed. I am not sure if my problem is due to oven temp variance or the substitution. I will definitely try this again and do recommend this as a kid approved recipe. Next time I think I will increase the oven temp to 200 degrees.