The IKEA MATÄLSKARE Microwave oven has 4 buttons, I press one to add 30 seconds and another one to cycle through the 4 power settings. That is their mid-range microwave, it has 750 watts of power and the more expensive models seem to have similar controls.
Their low end microwave TILLREDA has two knobs, but I've never used it.
This is also my preferred control scheme, and I bought one a few years ago.
To see what's easy to find now, I typed "microwave oven knobs" into amazon.com and got several with the classic mechanical timer and power knob design. Most of those are relatively small, but "commercial microwave oven" found some larger ones.
What would be the advantage of a button to cancel instead of turning the knob back to zero? It seems like that would add quite a bit of complexity to the mechanism to provide a UI that's just different rather than obviously better.
