We had planned to make Polenta Vegetable Bake one weekend when we were staying in a lake cabin. However, when we got there, we discovered there was no oven—only a portable, 2-burner cooktop! This is how we made it work, and now we often follow this version instead of baking it, especially if we need the oven for something else. Using pesto simplifies things, in that there’s no need to mince garlic and chop fresh basil. However, feel free to add extra garlic or basil, if you want. (That’s what Rebecca does.) This will feed two hungry people as a meal-in-one, or four people if served with sides.