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Easy Slow Cooker Tuna Casserole

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I couldn’t find many slow cooker pasta recipes here that would cook the pasta along with everything else in the cooker. So this is a basic recipe that I made up, along the lines of my mama’s stovetop tuna casserole, that can be tweaked by using different type of soup, vegetables, and pasta types as well as adding more or different cheeses, herbs, or spices. Super easy and even my 2-year-old ate it! It makes a very soft pasta, not al dente.


  • 8 ounces uncooked whole wheat spaghetti
  • 1 tablespoon olive oil
  • 2 cloves garlic, minced
  • 8 ounces crimini mushrooms, sliced
  • 2 small zucchini, sliced
  • dried oregano to taste
  • salt and pepper to taste
  • 12 black olives, pitted and sliced
  • 1 ounce crumbled feta cheese


Bring a large pot of lightly salted water to a boil. Add spaghetti and cook for 8 to 10 minutes or until al dente; drain.

Heat the olive oil in a skillet over medium heat, and saute the garlic 2 minutes. Mix in mushrooms and zucchini. Season with oregano, salt, and pepper. Stir in olives, and cook until heated through. Place pasta in the skillet, toss to coat, and continue cooking about 2 minutes. Top with feta cheese to serve.

Preparation time: 10 mins
Cook time: 5 hrs
Total time: 5 hrs 10 mins
Servings: 4 – Yield: 4 servings



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