Hall of Fame 3-Ingredient Cheesy Baked Zucchini Casserole Recipe by Donna John

Hall of Fame 3-Ingredient Cheesy Baked Zucchini Casserole Recipe

When I was first learning how to cook in my early 20s, my father-in-law shared with me a simple way to cook zucchini. The zucchini casserole recipe has just three simple ingredients and super easy prep. (Just what a new cook needs or anyone who has a busy life!)

This easy baked zucchini recipe has stood the test of time. Here is your super short and simple shopping list for this zucchini recipe: fresh zucchini, a small can of tomato sauce and shredded mozzarella cheese. Those three ingredients bake up and create a side dish you'll be making over and over again. 

Try this farm-to-table recipe and see what your family thinks of this cheesy side dish. 

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Cuisine: American
Prep Time: 5 minutes
Cook Time: 25 to 35 minutes
Total Time: 30 to 35 minutes

Servings: 4 to 6


  • 4 - 5 zucchini, sliced into rounds
  • 1 small can (8 ounces) tomato sauce
  • 1 - 2 cups shredded mozzarella cheese 

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Recipe Notes

  • You could top the zucchini with grated Parmesan instead of mozzarella.
  • Grate your own cheese. Freshly grated cheese melts up better than prepacked shredded cheese.
  • Try this recipe with yellow crookneck squash.
  • You could stir some Tuscan seasoning or dried Italian seasoning into the tomato sauce.

Here's how to make it:

  1. Put the zucchini into a baking dish. Season with salt and pepper.
  2. Pour the tomato sauce over the zucchini. Toss to coat.
  3. Cover and bake in a preheated 350-degree F oven until zucchini is tender, about 20 to 30 minutes.
  4. Top with the shredded cheese. Bake another 5 minutes.

Recipe cooking times and servings are approximate. To ensure image quality, we may occasionally use stock photography. Need to convert cooking and baking measurements? Here are some kitchen conversion charts. Here's how to submit your recipes to 30Seconds.

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Elisa Schmitz
I love this simple but absolutely delicious recipe, Donna John !
Zuchinni and cheese are a match made in heaven...
Nan Chul Shin
Thanks for sharing this.
Making this tonight, got a deal on zucchini today. Thanks for the recipe
Donna John
This was one of the very first things I made when I got married back in 1987. My father-in-law taught me to make it. So easy but it was gourmet to me! Hope you enjoy.
OMG, this is so good! Grandpa knew his stuff. Minimal ingredients, maximum flavor. So happy I tried this tonight.

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