I think this would work better with fewer items. This is busy and my eye just wanders about the image. The focus needs to be sharper, and a levels adjustment would improve the white balance and contrast.
A peanut butter and M&M sammich. Yum!! Not sure if the composition totally works for me, but I like the concept and the use of the M&M's to add some punch.
I looked at your file size and I think part of the problem is too much JPEG compression is killing the details. Your file size is less than half what you could have used. Always used the lowest level of compression (resulting in the largest file) that will sneak in under the limit for a challenge. (150K in this case)
Definitely shouts childhood! Lighting is nice and even. Objects lead my eye around the frame and back to the sandwich. Nicely done although not overly exciting or eye catching.