Vegetarian Instant Pot Spaghetti

Total time45 min

Prep time10 min

Cook time25 min

This one-pot pasta comes together with a rich, tomato-forward sauce built from crushed and diced tomatoes, plenty of garlic, and diced onion sautéed right in the Instant Pot for deep flavor. Broken spaghetti gets laid in a loose crosshatch over the simmering sauce so it cooks up tender without clumping, all under pressure in just eight minutes. Italian seasoning, oregano, and a pinch of red pepper flakes give the sauce a warm, herby backbone, while a quick sauté at the end thickens everything to a glossy, clingy consistency. Fresh torn basil on top adds a bright, fragrant finish. It's a fast, fuss-free weeknight dinner, and it holds up beautifully as a solid choice for a vegetarian table.

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Ingredients

4 servings

1 lb ground beef (80/20)
Gardein Ultimate Plant Based Frozen Ground Be'f - 13.7 Oz Impossible Foods Ground Beef Meat from Plants - 12 oz Beyond Meat Beyond Beef Plant Based Ground Beef - 16 Oz MorningStar Farms Crumbles Plant Based Protein Vegan Meat Grillers - 12 Oz Lightlife Smart Ground Original Plant-Based Crumbles
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Chef's tip
Pick the form that matches the recipe - a raw, moldable ground for patties, meatballs, or meatloaf; crumbles only for loose browned meat. Cook it in the recipe like the meat, checking doneness against the package guidance.
1 medium yellow onion, finely diced
4 cloves garlic, minced
1 can (28 oz) crushed tomatoes
1 can (14.5 oz) diced tomatoes
2 cups low-sodium beef broth
Chef's tip
Use the same amount of low-sodium vegetable broth. The dish will taste lighter and less meaty; a mushroom-rich vegetable broth gives the closest beefy flavor.
1 tsp dried italian seasoning
½ tsp dried oregano
½ tsp red pepper flakes (optional)
1 tsp salt, plus more to taste
½ tsp black pepper
8 oz spaghetti, broken in half
1 tbsp olive oil

For serving

¼ cup grated parmesan cheese (optional)
2 tbsp fresh basil, torn (optional)

Instructions

1
Select the Sauté function on the Instant Pot and add the olive oil. Once the oil is shimmering, add the onion and cook, stirring occasionally, until softened and translucent, about 4–5 minutes.
2
Add the garlic and cook, stirring constantly, until fragrant, about 1 minute. Watch closely so it doesn't brown.

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