First, grab a large pot and add the olive oil. Heat it over medium heat. Once it’s shimmering, toss in the finely diced onion. Let it cook for about 3-4 minutes, until it softens and becomes translucent. Then, add the minced garlic. Sauté for an additional minute until fragrant. Trust me; your kitchen will start smelling divine.

Next, crumble the ground Italian sausage into the pot. Cook it for about 5-7 minutes. Make sure to stir occasionally, breaking it apart as it cooks. We want that lovely brown caramelization, which adds depth to our dish. Once it’s cooked through, drain any excess fat if necessary.

Now comes the fun part. Pour in the tomato-basil pasta sauce and 2 cups of water. Stir it all together. The mix should look rich and inviting already, but wait, there’s more! Add in the dried Italian herbs and the red pepper flakes for that subtle kick.

Break the spaghetti noodles in half and gently place them into the pot. Make sure they’re mostly submerged in the sauce. Now, raise the heat to bring the mixture to a gentle boil. This is where the magic happens, folks!

Once it’s boiling, reduce the heat to low, cover the pot, and let it simmer. Cook for 10-12 minutes, stirring occasionally until the noodles are al dente and have absorbed most of the sauce. Feel free to check the pasta’s doneness a couple of minutes before the timer goes off.

Once the spaghetti is done, remove the pot from heat. Stir in the balsamic vinegar to add that extra layer of flavor. If you’re feeling fancy, top it off with freshly grated Parmesan cheese. Go ahead and be generous; this is your dish!