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Yellow Squash and Zucchini Gratin

This gratin is the perfect way to use up an abundance of summer squash. It's easy to prepare, takes just 10 minutes in the oven, and serves up bubbly and delicious. —Jonathan Lawler, Greenfield, Indiana
  • Total Time
    Prep: 25 min. Bake: 10 min.
  • Makes
    6 servings


  • 2 tablespoons butter
  • 2 medium zucchini, cut into 1/4-inch slices
  • 2 medium yellow summer squash, cut into 1/4-inch slices
  • 2 shallots, minced
  • 1/2 teaspoon sea salt
  • 1/4 teaspoon coarsely ground pepper
  • 4 garlic cloves, minced
  • 1/2 cup heavy whipping cream
  • 1 cup panko bread crumbs, divided
  • 1/2 cup grated Parmesan cheese, divided


  • Preheat oven to 450°. In a large skillet, melt butter over medium heat; add zucchini, yellow squash and shallots. Sprinkle with salt and pepper. Cook, stirring occasionally, until zucchini and squash are crisp-tender, 4-6 minutes. Add garlic; cook 1 minute more.
  • Add cream; cook until thickened, 3-5 minutes. Remove from heat; stir in 1/2 cup bread crumbs and 1/4 cup cheese. Spoon mixture into a greased 11x7-in. or 2-qt. baking dish. Sprinkle with remaining bread crumbs and cheese. Bake until golden brown, 8-10 minutes.
Nutrition Facts
1 cup: 203 calories, 14g fat (8g saturated fat), 39mg cholesterol, 357mg sodium, 15g carbohydrate (4g sugars, 2g fiber), 6g protein.

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  • Linda
    Jun 20, 2020

    I made this recipe (cut in half for a single person) and this is awesome. I'm on vacation and this recipe sounded easy and delicious. Just ate 1/2 the pan.

  • Carol
    Jun 20, 2020

    Made this last night as I had pretty much everything in the fridge. Used leek instead of shallot and 2% milk instead of heavy cream. Didn't have panko bread but made some croutons which I broke up coursley. I also added some fresh tarragon. This is so good and so flexible. I will make it many times over the summer with fresh squash. Thanks for a very good recipe. Know my friends are going to love it with fresh fish.

  • Deborah
    Jun 17, 2020

    I made this tonight and my husband just loved it. We will have this again for sure

  • Becki
    Jun 14, 2020

    Served with baked ham I had in the freezer and it made a fantastic summer dinner

  • LeAnne
    Jun 9, 2020

    Squash is not my favorite vegetable, so I rarely cook with it. This recipe was delicious! I added 3 cheese kielbasa and made it a main dish.

  • Lyndal
    Jun 8, 2020

    I made this dish tonight and it was fabulous! In fact, my husband has NEVER taken seconds of any kind of squash dish but he had a second helping of this one. I made it because the reviews were so great but this recipe actually lives up to the 5 stars rating. I'm a 'little bit of this' and a 'little bit of that' kind of cook but this recipe I made exactly as written. I won't change a thing. In fact, my husband is planting some squash plants right now ....... which is a first!! Great job Taste of Home!!

  • Sandra
    Jun 8, 2020

    Yum!! A new family favorite!! Even the non-squash/zucchini eaters liked it! Fast and easy side dish.

  • gordonpaul
    Jun 2, 2020

    I have made this time and time again and it is the best recipe for squash. Very easy as well and have given this recipe out to countless friends.

  • Lynette
    May 26, 2020

    This squash casserole is not as creamy as others I have made, but it lets the flavor of the squash and zucchini shine through. I enjoyed this easy to make dish.

  • Deb
    Apr 16, 2020

    This is delicious! It’s April now, I had some store-bought squash to use up, but I can’t wait until the glut of summer gardens gives me reason to make this often!! Very simple recipe and tastes so rich! Ok, so the heavy cream and cheese helps, but the amounts of each that are used are reasonable. I salted my cut squash, let them stand a little while and rinsed before cooking to cut back on moisture a little, but otherwise followed the recipe. I might try to switch out the cheese for something like Swiss or gruyere or Gouda, just for variety. Very good side dish!