Given a jar of peanut butter, a jar of jelly, and a bag of bread, can you tell me how to make a peanut butter and jelly sandwich?

Certainly! Here's how you can make a peanut butter and jelly sandwich:
Ingredients:

    2 slices of bread
    Peanut butter (smooth or chunky, your choice)
    Jelly or jam (any flavor you like)

Steps:

    Prepare Your Workspace:
        Place the 2 slices of bread on a clean surface, like a plate or cutting board.

    Spread Peanut Butter:
        Open the jar of peanut butter.
        Use a butter knife to scoop out some peanut butter.
        Spread an even layer of peanut butter on one side of the first slice of bread.

    Spread Jelly:
        Open the jar of jelly or jam.
        Use a clean butter knife or the same one if you prefer to scoop out some jelly.
        Spread an even layer of jelly on one side of the second slice of bread.

    Assemble the Sandwich:
        Place the peanut buttered slice of bread on top of the jelly-covered slice, with the spread sides facing each other.

    Press and Serve:
        Gently press the slices together so the peanut butter and jelly stick.
        Optionally, cut the sandwich in half diagonally or straight down the middle.

    Enjoy!
        Your peanut butter and jelly sandwich is ready to eat!

That's it — simple and classic!