• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
Happily From Scratch
  • All Recipes
  • Meal Type
    • Appetizers
    • Breakfast
    • Dinner
    • Lunch
    • Pasta
    • Salads
    • Sides
    • Snacks
    • Soups and Stews
  • Diet
    • Dairy Free
    • Gluten Free
    • Vegan
    • Vegetarian
    • Whole30
  • Ingredient
    • Beef
    • Chicken
    • Lamb
    • Seafood
    • Turkey
  • Quick and easy
  • About
    • Contact
menu icon
go to homepage
search icon
Homepage link
  • All Recipes
  • Meal Type
    • Appetizers
    • Breakfast
    • Dinner
    • Lunch
    • Pasta
    • Salads
    • Sides
    • Snacks
    • Soups and Stews
  • Diet
    • Dairy Free
    • Gluten Free
    • Vegan
    • Vegetarian
    • Whole30
  • Ingredient
    • Beef
    • Chicken
    • Lamb
    • Seafood
    • Turkey
  • Quick and easy
  • About
    • Contact
    • Facebook
    • Instagram
    • Pinterest
    • Twitter
  • ×
    Home » Gluten Free » Tomato, Zucchini, and Summer Squash Gratin

    Tomato, Zucchini, and Summer Squash Gratin

    Published: Apr 24, 2023 by Erica Julson · This post may contain affiliate links · 1 Comment

    • Share
    • Yummly
    Recipe Print

    Summertime produce is HERE, in all its glory.

    Juicy, sweet, bright red tomatoes.

    An ABUNDANCE of summer squash - the gift that keeps on giving.

    Stone fruit everywhere, so ripe and succulent, the juices dribble down your chin with every bite.

    Bundles of fragrant herbs, growing like weeds, ready to be tossed into salads, soups, and pestos.

    Can you tell I LOVE summer??

    One of the easiest ways to use up a TON of summer tomatoes and squash is with a gratin.

    Simply slice all the veggies nice and thin, arrange in pretty layers, and top with olive oil, salt and pepper, garlic, fresh herbs, and cheese.

    Bake for about 30 minutes, then serve!

    It's an impressive side dish that lets the flavors of the vegetables take center stage.

    If you really want this dish to wow you, take the extra time to pick up some produce from your local farmers market. You won't regret it!

    Recipe

    Tomato, Zucchini, and Squash Gratin

    Tomato, Zucchini, and Yellow Squash Gratin

    4.4 from 12 votes
    Print
    Prep20 minutes mins
    Cook30 minutes mins
    Total50 minutes mins
    Servings: 6
    (Toggle ON to prevent your screen from going dark)

    Ingredients 

    • 1 pound cocktail tomatoes, sliced ¼ inch thick
    • 1 pound zucchini, sliced ¼ inch thick
    • 1 pound yellow summer squash, sliced ¼ inch thick
    • Generous drizzle of extra virgin olive oil
    • 6 cloves garlic, minced
    • 1 tablespoon minced fresh thyme
    • Kosher salt
    • Freshly cracked black pepper
    • ⅔ cup shredded Romano cheese

    Instructions

    • Preheat the oven to 400 degrees Fahrenheit.
    • Get out a large 4.5 quart pyrex baking dish. Working in rows, alternately layer the slices of zucchini, yellow squash, and tomato. Prop the slices up a little bit so that the start of each row is leaning against the edge of the pyrex dish at an angle (this makes it easier to layer the slices). 
    • Once you have filled the baking dish, drizzle each row with a generous pour of extra virgin olive oil (this will help prevent the gratin from drying out). 
    • Next, sprinkle the whole dish with the minced garlic and thyme. Season generously with kosher salt and ground black pepper, then sprinkle the Romano cheese over the top.
    • Place the whole dish in the oven, and bake for about 30 minutes, or until the cheese is just starting to turn golden. Remove from the oven and let rest for at least 5 minutes before serving.
    Tried this recipe?Mention or tag @happilyfromscratch !
    Don't miss the goodies I share ONLY with my subscribers!

    Sign up to get recipes, wellness tips, and exclusive offers sent directly to your inbox each week.

    « Fall Quinoa Salad
    Weeknight Fettuccine Bolognese (With Veggies!) »

    Reader Interactions

    Comments

      4.42 from 12 votes (11 ratings without comment)

      Leave a Reply Cancel reply

      Your email address will not be published. Required fields are marked *

      Recipe Rating




    1. Diana Lopes

      August 03, 2017 at 1:53 pm

      5 stars
      This is exactly what I was looking for! Thank you for the awesome recipe and keep on posting 😉

      Reply

    Primary Sidebar

    Erica Julson Profile Picture

    Hi, I'm Erica! Food & wellness lover, cooking enthusiast, and registered dietitian nutritionist. 

    My mission is to help you reclaim the joy of cooking at home by providing you with jaw-droppingly delicious recipes you'll want to make again and again.

    More about me →

    Popular

    • Tomato, Zucchini, and Squash Gratin
      Tomato, Zucchini, and Summer Squash Gratin
    • Pasta with Sausage and Fennel Fronds
    • Pappardelle with Brown Butter Sage Sauce
    • Farro Salad with Butternut Squash

    Footer

    ↑ back to top

    About

    • Privacy Policy
    • Terms & Conditions

    Contact

    • Contact

    As an Amazon Associate, I earn from qualifying purchases.

    Copyright 2025 The Unconventional RD LLC

    Rate This Recipe

    Your vote:




    A rating is required
    A name is required
    An email is required

    Recipe Ratings without Comment

    Something went wrong. Please try again.