In a large pot, bring plenty of water to a boil and cook pasta al dente according to instructions.
Heat oil on a large non-stick pan on medium high heat and then stir in your flour. Stir until a smooth paste forms (called a roux).
Slowly pour in oat milk (or preferred alternative) while stirring constantly, using a spatula or whisk to get rid of any clumps, if necessary. Stir until all the milk has been added and the consistency becomes a bit thicker, like cream.
Add in minced garlic, tomato paste and gochujang (based on your preferred spice level) and stir until well-combined. Once thickened, turn heat down to low or medium-low.
Once pasta is cooked al dente, save around 1/2 cup of pasta water and strain your pasta. Add the pasta into the sauce and mix well.
Optionally, add a small amount of pasta water (as needed) and cook together for 1-2 minutes or to your liking.
Add salt and pepper to taste and enjoy right away! Feel free to add any other ingredients to your Gochujang Pasta!