I have used only flannel & on both sides. Also the ones I make were in the shape of a peanut, less bulk that way.

I use cloth diapers and "decorate" them with a 4 inch x width of diaper fabric that matches the quilt I made mom; or just cute fabric-flannel

I also made what I call a "cuddle" cloth which is the same as a burp cloth only one side is minky material. That way when little one is just nestled in on your shoulder to be put to sleep it's nice and soft. Not to mention who wants to wake a sleeping baby when they are on grandma's shoulder!!! Plus it isn't as irritating on those sweet little cheeks.

I have raids my child, and been there for many nieces and nephews and even burped some of my siblings. I guess I just don't "get it." I don't understand why I would put so much effort (and cost) into something that is just going to get puked on and washed a million times. I just used the receiving blankets that I got as gifts - you know the ones that are too small to wrap a baby in? They're usually of a busy enough print that stains don't show.
My concern if they're made of too many layers is, that they would take forever to dry in the dryer or on the line.
But maybe I'm just not "fashionable."

I use the Birdseye diapers found at walmarts and embroidered on them.

The burp cloths I recently made for a friend,just had 2 layers of fabric, no batting, no flannel, although flannel would be a good choice to instead of two layers of cotton fabric.

I made several for my GD, born in March. I used a diaper for the filler. I brought them at Target, used cotton on the front & terry cloth or flannel on the back. They wash great & are absorbent

I do flannel on both sides -- I make them out of fat quarters and the Mom's love them.

Hi, when I make burp cloths I use flannel on one side and terrycloth on the reverse, prewash both before cutting and sewing. Sew right sides together, turn and sew around near the edge all the way around, then there is no need to sew the turning area closed seperately.

I sometimes use terry (buy a cheap towel) on one side and pre-washed flannel on the other. Nice and absorbent.