How can I bake muffins without an oven? In the Big Man's Blog, there's a recipe for Banana Bread Muffins, which I'd love to make. The problem is the very first item below, since I have no oven. I have a microwave and an induction stove (and can obtain an insertion for the pot for steam cooking). No heated oven, though, regrettably.

Preheat the oven to 350 degrees F and line up muffin liners and grease lightly.
In a large mixing bowl, add all the ingredients and mix until fully incorporated.
Pour batter into muffin liners until close to the top.
Top with extra chocolate chunks and bake for 20-25 minutes, or until golden on top.

Is there a way to cheat around this problem using the available equipment? I've read blogs showing how some people describe black magic work-arounds but I'm not sure if they actually made it and also if perhaps the tricks work for their cakes and not in a general case.
You can actually steam a lot of cakes. The basic idea is seal the cake pan tightly with foil (or even plastic wrap if your can handle the temperature) and then place it in your steamer insert/basket. I find it takes about 40 min for it to cook all the way through. Makes for a super moist and fluffy cake.
Here’s a random example I found online.
Paper in reference to streaming gluten free cakes (which is where I first got the idea)