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Summer Squash Gratin

Crispy on the outside and creamy on the inside, this summer squash gratin recipe is the perfect side to any summer meal. It is easy to prepare, and serves up bubbly and delicious. 

Prep Time
10 mins
Cook Time
10 mins
Total Time
30 mins
Servings: 6 people
Course: Side Dish , Main Course , Dinner
Cuisine: French , American , International

Ingredients

  • 2 medium zucchini sliced crosswise into 1/4" rounds
  • 2 medium yellow squash sliced crosswise into 1/4" rounds
  • 2 tsp smoked paprika
  • salt and pepper to taste
  • 2 tbs butter plus more for buttering pan
  • 1 tbs garlic powder or 2 cloves garlic, minced
  • 2 tbs All-Purpose Gluten-Free Flour or 1 tbs arrowroot powder
  • 1½ cup heavy whipping cream
  • 2 cups shredded cheddar cheese, divided
  • ½ cup shredded gruyere cheese (or shredded mozzarella), divided
  • salt and pepper to taste
  • 1 pinch nutmeg
  • 1 tsp Italian seasoning

Instructions

    Cup of Yum
  1. Preheat oven to 375° and butter a medium casserole dish. In a medium sauce pan over medium heat, melt 2 tablespoons butter. Add garlic and cook until fragrant, about 1 minute. Whisk in flour and cook until flour is golden and starts to bubble, about 1 minute more. Add cream and stir until mixture comes to a simmer. Boil until slightly thickened, about 1 minute.
  2. Turn off heat and add 1 cup cheddar cheese and 1/2 cup Gruyère cheese.  Stir until cheese has melted, then season with salt, pepper and nutmeg.
  3. In a large bowl, combine the zucchini and yellow squash together. Add in the smoked paprika, sea salt and pepper to taste. Add a layer of squash to the baking dish, overlapping the slices. Season with salt and pepper and pour about half of the cream mixture over squash. Sprinkle some of the remaining Cheddar and Gruyère on top, then sprinkle the Italian seasoning on top of cheese.
  4. Make another layer with remaining squash slices, cream mixture, cheese and Italian seasoning. Bake until bubbly and golden on top, about 25 minutes. Broil for about 2-3 minutes.