One-Pot Vegan Spaghetti

Heat olive oil in a large pot over medium heat. Add diced onion and cook, stirring occasionally, until lightly browned and translucent.

Add minced garlic, sliced mushrooms, diced bell pepper, and salt. Cook until the vegetables soften and begin to caramelize, stirring frequently.

Stir in dried oregano and red pepper flakes. Cook until fragrant, about one minute.

Pour in the marinara sauce and water. Bring to a simmer. Break the spaghetti in half and add to the pot, stirring to prevent clumping. Add a handful of spinach if desired. Cover, reduce heat to low, and simmer, stirring twice during cooking.

Turn off the heat and let the pasta rest covered for 2 minutes. Stir again, then adjust seasoning with salt, oregano, or pepper flakes. Serve topped with fresh chopped basil and vegan Parmesan if desired.