blanket (someone or something) with (something)
To cover with something. By the time I got to the beach, the kids had already blanketed grandpa with sand. The storm blanketed the mountaintops with snow, making it look like a scene from a painting.
blanket someone or something with something
Fig. to cover someone or something with something. They blanketed the flames with a layer of foam. The children blanketed Jimmy with leaves and pretended he was lost.