I agree with all. We use Tupperware clones instead of jars, and a microwave+gril+convection oven for 75% cooking. Reposting an old comment:

We are very happy with our Samsung Hotblast https://www.samsung.com/in/microwave-ovens/convection/28-lit... (or a similar version). You setup the temperature to 200°C (392°F), the time to 20 or 30 minutes and you can go to another room while it cooks. It takes some time to find the perfect time, and sometime you must use the microwave or grill instead, but it's perfect for cooking in a short time.