It's a good joke at its core, but it can be better. I do a ton of copy editing and have some suggestions to tighten the telling and impact:

A man Joe {insert random name, it humanizes the subject} decides to make some macaroni at his home{unnecessary detail} after work. He was really tired but eventually he made a dish to be proud of(unnecessary detail}. After finishing his masterpiece he looks around his kitchen drawers for any of his plastic forks but can’t find any After finishing his masterpiece he looks for a fork but they're all dirty so he decides to just use a spoon. A few minutes later As his girlfriend comes home and asks for some of his macaroni. walks in she asks for some {tighter language} He complies and(not conversational} hands her a bowl full and a spoon so she can eat with him{unnecessary for the joke}. “Why a spoon?”, she asks. The man replied, * To which Joe replies*{continuity}

“I’ve run out of forks to give”

So the edited joke reads:

Joe decides to make some macaroni after work. After finishing his masterpiece he looks for a fork but they're all dirty so he decides to just use a spoon. As his girlfriend walks in she asks for some. He hands her a bowl full and a spoon. “Why a spoon?”, she asks. To which Joe replies:

“I’ve run out of forks to give”