spread (something) with (something)
1. To move, disperse, or be distribute some substance using some implementation. Why on earth are you spreading butter with a spoon? We'll need to spread the tar with a special kind of roller.
2. To cover or coat something with a layer of some substance. The crackers keep breaking apart in my hands when I try to spread them with peanut butter! I spent the day spreading the field with fertilizer.
spread something with something
to cover something with a coat of something. Using the roller, Judy spread the wall with a thick coat of pink paint. Spread the lasagna with a layer of cheese mixture and cover that with another layer of lasagna.