I'm going to threaten to kick out my girlfriend for refusing to cook
Why does your girlfriend not want to cook anymore?
She wants me to start cooking for her too now.
Thinking that household chores like cooking is the sole responsibility of the woman in a relationship is sexist and outdated thinking. It's wrong of you to threaten to kick out your girlfriend because she did not want to cook for you. You should try to be more opened minded about gender roles and be willing to do things such as cook and clean in order to be a good and equitable partner for your girlfriend.
Yea but it takes too much time and effort.
Relationships take consistency if you want them to work. Tell her that you would be willing to clean the dishes if she would be willing to cook. There's always a compromise, but you have to be willing to put in that effort.