Sauce it and broil it, I say.
We eat a fair amount of tofu at home and I don't consider it easy to cook. For most preparations, it needs to be pressed and drained, and then possibly marinated. Sometimes I'll cut, press, and drain as soon as I buy it and then pop it in the freezer until I want to use it. Freezing it gives it a denser texture, more like meat, but I actually prefer it from the unfrozen state, which requires a lot of time investment.
The easiest thing I do with slabs of tofu is to brush them with a sauce that will carmelize (like BBQ sauce) and broil it for a few minutes a side, being careful not to let it burn. Serve it with whatever you want: steamed veggies, cole slaw, bread, whatever.
There are more involved preparations that I do, but this is by far the easiest.
Best,
Michael