Boil a pot of water and cook udon noodles according to package instructions. Pay attention to the cooking time! Frozen udon noodles cook very quickly.

Prepare your eggs however you prefer. Pan fried, poached, or just the egg yolk would taste amazing!

While you are waiting for the water for the udon noodles to boil, start making the sauce so you can add the cooked udon noodles in right away. In a bowl, add in the kimchi juice, gochujang, gochugaru, oyster sauce, sugar, and sesame oil and stir to combine.

In a large skillet, heat the butter on medium heat. Once the butter is all melted, add in the chopped kimchi, shiitake mushrooms, and Spam. Cook until the Spam is starting to brown (~3 minutes). Then, add in the sauce and cook until sauce starts to slightly thicken (~3 minutes).

Add in the cooked udon noodles and stir to combine. Top with your eggs, green onions, and sesame seeds. Serve immediately.