Microwave strawberry jam recipe

1 c Crushed strawberries
2 ts Lemon juice
3/4 c Sugar
1/4 ts Butter
Stir together strawberries, lemon juice, sugar and butter in an 8-cup microwave-safe measuring cup.
Microwave on 100 percent power for 4 minutes, then stir and continue to microwave at 100 percent power for 4 minutes. Pour into covered container, cool and refrigerate.