This recipe is from
Very Best Baking, home to Nestle, Carnation, and Libby's. I've been making this custard for probably at least 13 years. After the first time or two I made it I decided to add melted chocolate to it. I add 1/2 c. milk chocolate chips, which I melt in part of the evaporated milk, which I heat first. Adding that amount of chocolate doesn't affect the consistency at all. I've tried using unsweetened cocoa powder as well as melted semi-sweet chocolate in this and they're all very bitter, so I stick with milk chocolate. The chocolate is mild. For some reason the tops of the custard is always a darker brown than the rest. I used less salt, too.
I divide my mixture into five small bowls, each using almost 3/4 c. of mixture, and they baked in exactly 30 minutes but I think they were slightly overcooked. My knife came out with a few bits of firm custard on it. If you follow their recipe and use six dishes, since you have less mixture in each than if you used just five like I do, yours should take less than the 30 minutes mine took, but they tell you 35 minutes for six dishes. For some reason the tops of these are always a darker brown than the custard, which is a pale brown.
I grade the original and my version of this an A.