If they're really ****ing hot, you're cooking them correctly.
If they're frozen, you're not.
I have them down in my microwave and they always come out hot in the middle, but not hard on the top (when you cook them too long). 1 min 35 secs is what they take in my microwave.
2002 Pontiac Bonneville SSEi
Pioneer DEH-P6000UB head unit
Alpine SPX-17REF 6.5" components (active)
Sundown z15 (3 cubes @ 35hz)