Ooh, I've made a similar eggplant recipe, but it had pasta spirals. If quinoa is like couscous, I imagine it'll work better!

What's a reactive pan?

Also, good idea for the seasonings

With your ingredients, I would boil up the rigatoni, while frying up the mushrooms, potatoes and green beans in some flavoured olive oil, probably rosemary because I actually have fresh rosemary, so I would actually add the leaves to cook up with the oil. As for kidney beans, I'm not really sure how to prepare them, but I would do what the pack said () and then stir it all together, and serve in a bowl, accompanied with a red wine for depth