It's not rocket science, it's just cooking.
Step 1: Preheat your space station to 350 degrees Fahrenheit. No, wait, that's not a thing. Just use the space station's built-in "Meh" setting.
Step 2: In a medium saucepan, combine 1 cup of space-grown tomatoes, 1/4 cup of space-collected garlic, and a pinch of moon rock salt. Stir until the mixture is roughly the same consistency as the space station's coffee from the cafeteria.
Step 3: Add 1/2 cup of space-pasta, which has been carefully selected to have the perfect ratio of crunch to sogginess. Stir until the spaghetti is coated in the tomato mixture.
Step 4: Serve hot, garnished with a sprinkle of stardust and a side of astronaut ice cream.
Disclaimer: Cooking in space is not actually a thing, but if you're feeling adventurous, go ahead and try it. Just don't forget to bring the space-towel.