Chocolate Chip Granola Bars

This first picture is from the first batch without the nutella. Forgot to take a picture of the second patch mixture. It produced a darker moisture mixture.

Chocolate Chip Granola Bars:
Another favorite of my youngest son, figured I make it so I can make it healthy and homemade. This one wasn't that hard to make. Add all dry ingredients together and mix. Add all liquid ingredients together and mix. Then add wet to dry mix and cook. Pretty simple.. I wish I swear sometimes I feel like I can't cook. When I have to make things over and over until I get it right. I have made this batch twice and It still was a waste. The first time I made it I had a friend listen out for my timer to beep while I was doing other things. He didn't hear it and I forgot about it, by the time I remembered it was too late it burned. The second time I cooked it I keep an eye on it looking at it making sure it didn't burn and waiting for the top to form a golden crisp. It never did all it did was get a crust around the edge and the middle stayed liquid and it bubbled. I took it out in fear that it would burn. Let it cool then took it out turned it over to release the wax paper and it stuck to it and I couldn't get it off.. Grrrrr.... So I scooped out the middle greased a square container placed it in the refrigerator to help it cool completely so that I can cut it. Oh yeah and both times the chocolate chips melted. Looking back at everything I did here is where I went wrong:

• The first batch burned 
• The first batch chocolate chips was completely melted
• The first batch I made it in a 13x8 glass baking dish (recipe called for a 8x8x12)
• The first batch I omitted the 1/3 cp of nutella
• Second batch never formed a crust on top
• Second batch was baked it in a 8x8 glass baking pan (not sure what a 8x8x12 is all I know is I don't think I have one)
• Second batch stuck to the wax paper

After doing some research on the difference between wax paper and parchment paper which I should have done before. They both have different coating, wax paper is not meant for use in the oven—the wax paper is coated with wax which will melt if the paper is exposed to direct heat. Parchment paper is coated with silicone to give it a nonstick, heat-resistant surface. The recipe also called for 1/3 cp of peanut butter or nut butter. He doesn't like peanut butter so I used nutella instead as a substitute  After doing some research on the difference in nutella and peanut butter it is not a 1 for 1 substitute. Nutella  has a higher sugar content which will make the product produce more moisture. (No wonder why it didn't form a crust) Grr. It also made the granola come out dark and have a very strong chocolate flavor. I also did some research on how to cook chocolate chips in a batter without melting the chips. It mentioned I should freeze the chips and coat it with a little flour before placing it into the batter. It also said I should use good quality chips and not expose them to high temps with prolong cooking. (Chocolate chips keep it shape). You would think I would no better then to use substitutions without doing research first. I am so mad at myself all I'm doing is wasting money by not paying attention and not doing research on products when I use substitutions. I did taste the mixture it did have a great taste All of that product just to produce 5 bars...Oh well gotta try again..Third times a charm I guess :(