Follow these simple steps to create your incredible One Pot Spaghetti:

1. Heat Oil: In a large pot, heat olive oil over medium heat.
2. Add Garlic: Sauté minced garlic until fragrant, about 1 minute.
3. Combine Ingredients: Add the uncooked spaghetti, diced tomatoes (including the juice), vegetable broth, oregano, and red pepper flakes (if using).
4. Season: Season with salt and pepper to taste. Stir well to combine all ingredients.
5. Cook Pasta: Bring the mixture to a boil, then reduce the heat to a simmer. Cover and cook for about 10-12 minutes, stirring occasionally until the pasta is al dente and most of the liquid is absorbed.
6. Add Greens: Stir in the spinach or kale during the last 2 minutes of cooking until wilted and tender.
7. Cheese It Up: If desired, mix in grated Parmesan cheese until melted and creamy.
8. Serve: Remove from heat and garnish with fresh basil leaves, if desired.

These steps will help you effortlessly prepare this amazing dish in just one pot!