There’s something quietly satisfying about a meal that comes together in just one pot. This one pot pasta thon has been my go-to on evenings when I want something hearty without the fuss. I remember the first time I made it, the kitchen filled with the scent of garlic and oregano—a little chaotic, since I almost forgot to drain the tuna, but honestly, that’s part of the charm. The tomatoes simmered gently with the pasta, creating a rich, tangy sauce that wrapped around each penne, and the spinach added a fresh, slightly earthy note that felt like a secret upgrade. The moment I stirred in the tuna and saw it melt into the sauce, I knew this recipe was a keeper.

It’s not fancy, but those simple flavors hit the spot every time. I usually eat it straight from the pot, with a sprinkle of Parmesan melting on top—comfort food without any drama. Sometimes I get distracted and leave the kitchen for a minute, but coming back to that aroma is always worth it.

Why You’ll Love It

Quick and low-effort: everything cooks together, so cleanup’s a breeze.
Nutritious with a good balance of protein, veggies, and carbs.
It’s simple — and that’s kind of the point. No complicated steps, just honest ingredients.
Comforting and filling without feeling heavy.
Perfect for nights when you don’t want to think too much about dinner.

Even if you’re not usually a tuna fan, this recipe might just change your mind—there’s something about the way it blends into the sauce that’s surprisingly delicious.

One Pot Pasta Thon

Print Recipe

A quick and easy one pot pasta recipe with tuna, tomatoes, and spinach, perfect for a nutritious weeknight meal.

Prep Time: 10 minutes
Cook Time: 20 minutes
Total Time: 30 minutes
Yield: 4

Ingredients

Scale

12 ounces dried penne pasta
1 (14.5 ounces) can diced tomatoes with juice
1 (5 ounces) can tuna in olive oil, drained
4 cups fresh baby spinach
1 medium onion, finely chopped
3 cloves garlic, minced
4 cups vegetable broth
2 tablespoons olive oil
1 teaspoon dried oregano
1/2 teaspoon crushed red pepper flakes
Salt, to taste
Black pepper, to taste
1/4 cup grated Parmesan cheese

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Instructions

Heat olive oil in a large pot over medium heat.
Add the chopped onion and cook for 3-4 minutes until softened.
Add the minced garlic, dried oregano, and crushed red pepper flakes; cook for 1 minute until fragrant.
Pour in the vegetable broth, diced tomatoes with their juice, and add the dried penne pasta.
Stir to combine and bring the mixture to a boil.
Reduce heat to medium-low and simmer uncovered for 12-15 minutes, stirring occasionally, until the pasta is cooked and most of the liquid is absorbed.
Add the drained tuna and fresh baby spinach to the pot, stirring gently until the spinach wilts, about 2-3 minutes.
Season with salt and black pepper to taste.
Remove from heat and sprinkle grated Parmesan cheese over the pasta.
Serve immediately.

Kitchen Notes: I use a large pot with a heavy bottom to keep the pasta from sticking, but nothing fancy is needed. This dish pairs nicely with a simple green salad or some crusty bread if you want to round out the meal. If you’re feeling adventurous, you could swap spinach for kale or add a splash of lemon juice at the end for brightness, though I haven’t tested all variations extensively. Some days I toss in a pinch of chili flakes for a little heat, but that’s just my personal twist.

FAQ

Can I use fresh tuna instead of canned? Fresh tuna isn’t really the same here since the canned version melts into the sauce nicely. Fresh might work but expect a different texture.

Is this recipe freezer-friendly? It’s best enjoyed fresh or within a couple of days in the fridge. The spinach tends to get a bit mushy after freezing.

Can I use a different pasta shape? Absolutely, but I find penne holds up well to the sauce without getting mushy.

What if I don’t have Parmesan? It’s great without it too, or you can sprinkle some nutritional yeast if you want a cheesy flavor without dairy.

If you’re looking for a fuss-free dinner that still feels like you put some thought into it, this one pot pasta thon might just become your new weekday staple.