Here are some photos of what I did. We have a cooktop, not a stove, but you could do the same thing for a stove. The top is laminate with a maple edge. On the underside, I made a piece for the rear that has the contout of the cooktop so that it locks in place. We use this cover so much now, we would not know how to do without it.
It goes from the wall to the front edge of the counter so we get the most useable counter surface.
With laminate, we can't put hot things on it or cut on it though. I am going to make a new one exactly the same but made from an 18x24" cutting board blank available at www.countrymouldings.com
Also, with the weight of this thing, we leave it in place for travelling and it stays in place. No need to stow it away.