Overcook (verb)

1. Cook (food) for too long or at too high a temperature.
2. Spoil or ruin (something) by excessive or prolonged treatment.

Origin:

Early 17th century (in the sense "cook too much"): from over- + cook.

Examples:

1. I overcooked the rice.
2. The sauce had been overcooked and was now too thick.
3. The steak was overcooked and dry.
4. He overcooked the play in his eagerness to score.
5. She overcooked the vegetables and they were mushy.