Begin by bringing a large pot of salted water to a boil.

While the water is heating, gather all your sauce ingredients.

Add the spaghetti to the boiling water and cook according to package instructions until al dente, about 8-10 minutes.

In a large skillet, heat the olive oil over medium heat.

Add the minced garlic and sauté for about 1 minute until fragrant.

Stir in the diced tomatoes, oregano, and red pepper flakes if using; simmer for about 5 minutes.

Once the pasta is cooked, drain it in a colander, reserving a cup of pasta water.

Add the drained spaghetti directly to the skillet with the sauce and toss well to coat.

If the sauce seems too thick, add a little reserved pasta water until you reach the desired consistency.

Serve hot, garnished with fresh basil.