Firecrackers are simply peanut butter, inbetween 2 crackers of your choice.

You take at least .5 of high quality, double if shagg quality, mix in the weed with the peanut butter, smear on either side of cracker, smoosh together, wrap in tinfoil, heat in oven at 100-120degF for about 20-30min, cool, unwrap, eat and enjoy.

Works best on an empty stomach, and yes, it will get you fucked up for a good few hours, at least.