Spary the burnt laminate and surrounding area liberally with commercial all-purpose cleanser.
Dampen a rag with water. Wipe the damp rag across the laminate countertop to remove grime and rinse away the cleanser.
Squeeze enough ordinary white toothpaste (not gel) onto the burn mark to evenly cover it. Toothpaste contains a mild abrasive that removes mild burns without scratching laminate countertops.
Let the toothpaste sit on the burn mark for until dry.
Scrub the burn mark with moderate force using a clean toothbrush. This scrubbing action combined with the toothpaste buffs burn marks off laminate surfaces.
Continue scrubbing the burn mark until it thoroughly disappears from the countertop.
Moisten a fresh rag with water. Wipe the damp rag across the laminate countertop to rinse away the toothpaste.
Dry the countertop with an absorbent towel.