Recently, I tried the new Beyond Meat sausage and egger breakfast burger at A and W restaurants. It costs a dollar more than a regular sausage and egger. It did have a sausage taste and was very filling. You have a choice of whole grain or white bun which is good. The whole grain bun was fresh and delicious.
I heard the vegetarian hot dogs at Ikea are quite good, made with chick peas. So that is on my list to try at some point.