Creating delicious One Pot Spaghetti is simple, especially when you follow these easy steps:

1. Heat Olive Oil: In a large pot, heat the olive oil over medium heat.
2. Sauté Vegetables: Add the diced onion and bell pepper. Sauté for about 3-4 minutes until they soften.
3. Add Garlic: Stir in the minced garlic and cook for an additional 1 minute until fragrant.
4. Combine Ingredients: Add the diced tomatoes (with juice), broth, and spaghetti. Make sure the spaghetti is submerged in the liquid.
5. Season: Mix in the Italian seasoning, red pepper flakes (if using), salt, and pepper. Bring the mixture to a boil.
6. Cook Spaghetti: Reduce heat to a simmer and cover the pot. Cook for about 10-12 minutes, stirring occasionally, until the spaghetti is al dente.
7. Add Spinach: Stir in the spinach and cook for an additional 2-3 minutes until wilted.
8. Taste and Adjust: Before serving, taste the dish and adjust seasoning as needed.
9. Serve: Plate the One Pot Spaghetti and sprinkle with grated Parmesan cheese to taste.

These straightforward steps will guide you in creating a scrumptious One Pot Spaghetti that’s sure to impress.