Start by cooking the pasta in a large pot of boiling water according to the directions in this article.
While the pasta is cooking, heat a tablespoon of olive oil in a large skillet over medium-high heat. Once the oil is hot, add the garlic and cook for about 30 seconds, or until fragrant.
Next, add the vegetables of your choice and cook for 3-5 minutes, or until they are slightly softened. I like to use a mix of bell peppers, onions, carrots and mushrooms, but you can really use any vegetables you like.
Once the vegetables are cooked, add the cooked pasta and a tablespoon of tomato sauce to the pan and toss everything together for another 2 mins.
Finally, season with salt and pepper to taste and serve immediately.
If you want your stir fry to be more flavorful, try adding some chopped fresh herbs like basil or parsley for an extra bit of flavor.