By Sarah Steffens

Is your garden overflowing with summer zucchini? Here’s a dish that’s packed with nourishing veggies, bursting with summery flavor, and fully delivers on taste. Add this Whole30 Zucchini, Tomato, and Sausage Casserole to your meal plan this week.

Looking for more Whole30 casserole recipes? Try this Tuna Noodle Casserole.

Try This: Whole30 Zucchini, Tomato, and Sausage Casserole


Whole30 Zucchini, Tomato, and Sausage Casserole

This Whole30 Zucchini Turkey Sausage Casserole can be made today, and enjoyed all week long.
4.21 from 77 votes
Prep Time 10 minutes
Cook Time 40 minutes
Total Time 50 minutes
Servings 4


  • 2 tablespoons ghee or coconut oil
  • 1 medium red yellow or white onion, peeled & diced
  • 2 medium garlic cloves peeled & minced
  • 1 pound of ground sausage any Whole30 compatible ground sausage will work
  • 2 teaspoons sea salt
  • 1 teaspoon black pepper
  • 2 cups Whole30 compatible marinara sauce Primal Kitchen, Ottamot, Monte Bene, Lucini Italia, Cucina Antica, and Organico Bello all make Whole30 Approved varieties
  • 1 6 ounce can of tomato paste
  • 2 medium zucchinis sliced as 1/4” pieces
  • Fresh parsley optional


  • PREHEAT your oven to 400 degrees Fahrenheit.
  • ADD ghee or coconut oil to a large stockpot or Dutch oven and bring to medium heat. Add onion and garlic and sauté until it begins to soften, about 3 minutes.
  • ADD sausage and break up well with a wooden spoon. Season with sea salt and pepper and cook with the onion until it is cooked through and has browned a bit, about 10 minutes. Turn the heat off and stir in marinara sauce and tomato paste. Transfer to an ovenproof baking dish.
  • ARRANGE sliced zucchini in the sausage mixture by allowing thirds of the zucchini to stay above the mixture so that they brown a bit when baked. Transfer to your oven and bake, uncovered, until the zucchini is soft and browned, about 30 minutes.
  • SERVE between 4, garnishing with optional fresh parsley, storing any leftovers in a glass container in the fridge for 3 days.
  • ENJOY!
Tried this recipe?Let us know how it was!

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Published by Lindsay Rhodes

Lindsay Rhodes currently lives in Chicago. She attended Butler University where she received her B.S. in Marketing and a minor in Strategic Communication. Previously, Lindsay has worked for management consulting firms as a marketing consultant and as a campus recruiter.

Sarah Steffens

Recipe Developer

Sarah Steffens, our Recipe Developer, has a B.A. in Business Administration, Public Relations from The Master's University in Southern California. After years of experimenting with nutrition and recipes in her own kitchen, she now works as a Personal Chef and Food Photographer in Sacramento, creating meals that support her client's intention to physically and mentally thrive. She has catered several independent film sets, making it her goal to optimize the energy and well-being of each creative crew. You can find many of Sarah's recipes in various Whole30, Paleo and Keto cookbooks. When Sarah is not cooking and styling recipes, you can find her enjoying a long walk, working on creative projects with loved ones or exploring beautiful Northern California.