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Slow Cooker Mushroom and Gruyère Crustless Quiche

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This Slow Cooker Mushroom and Gruyère Crustless Quiche is a sophisticated yet simple dish that’s perfect for brunch, lunch, or a light dinner. Packed with savory mushrooms, creamy Gruyère cheese, and a blend of eggs and cream, this quiche is both rich and satisfying. The use of a slow cooker makes it incredibly easy to prepare, allowing you to enjoy a delicious meal with minimal effort. Let’s explore this flavorful recipe and its variations to suit different dietary preferences.

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Ingredients

  • 2 tablespoons olive oil
  • 1 pound mushrooms, sliced
  • 1 small onion, finely chopped
  • 1 cup grated Gruyère cheese
  • 6 large eggs
  • 1 cup whole milk
  • 1/2 cup heavy cream
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1/4 teaspoon nutmeg
  • 1 tablespoon fresh thyme leaves

Instructions

  1. Prepare the Vegetables: Heat the olive oil in a large skillet over medium heat. Add the sliced mushrooms and chopped onion. Sauté until the mushrooms are browned and the onions are translucent, about 5-7 minutes. Remove from heat and let cool slightly.
  2. Grease the Slow Cooker: Lightly grease the inside of your slow cooker with cooking spray or a little olive oil to prevent sticking.
  3. Layer the Ingredients: Spread the sautéed mushrooms and onions evenly across the bottom of the slow cooker. Sprinkle the grated Gruyère cheese over the vegetables.
  4. Mix the Egg Mixture: In a large bowl, whisk together the eggs, whole milk, heavy cream, salt, black pepper, nutmeg, and fresh thyme leaves until well combined.
  5. Pour the Egg Mixture: Carefully pour the egg mixture over the mushrooms, onions, and cheese in the slow cooker.
  6. Cook: Cover the slow cooker and cook on low for 4-5 hours or on high for 2-3 hours, until the quiche is set and a knife inserted into the center comes out clean.
  7. Serve: Once cooked, let the quiche cool slightly before slicing. Serve warm or at room temperature, garnished with additional fresh thyme if desired.

Cooking Notes and Tips

  • Cheese Options: While Gruyère is recommended for its rich, nutty flavor, you can substitute it with Swiss cheese, cheddar, or a blend of your favorite cheeses.
  • Vegetable Variations: Feel free to add other vegetables such as spinach, bell peppers, or zucchini to the quiche for added flavor and nutrition.
  • Storage: Store any leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in the microwave or oven before serving.

Variations

Keto Version

To make this dish keto-friendly:

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  • Ensure all ingredients are keto-approved. The current ingredients are already suitable for a keto diet as they are low in carbs and high in fats.

Low-Carb Version

For a low-carb version:

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  • The recipe as it stands is already low in carbs, making it an excellent choice for those following a low-carb diet.

FAQs

Q: Can I make this quiche ahead of time? A: Yes, you can prepare the quiche mixture the night before and store it in the refrigerator. In the morning, pour it into the slow cooker and cook as directed.

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Q: Can I use a different type of milk or cream? A: Yes, you can use half-and-half or a dairy-free milk and cream alternative such as almond milk or coconut cream. Just note that the texture and flavor may vary slightly.

Q: How do I know when the quiche is done? A: The quiche is done when the center is set and a knife inserted into the middle comes out clean. The edges may also start to pull away from the sides of the slow cooker.

Q: Can I freeze the quiche? A: Yes, you can freeze the cooked quiche. Allow it to cool completely, then wrap it tightly in plastic wrap and foil. Freeze for up to 3 months. Thaw in the refrigerator overnight and reheat before serving.

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Q: Can I add meat to the quiche? A: Absolutely! You can add cooked bacon, ham, or sausage to the quiche mixture for added protein and flavor.

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This Slow Cooker Mushroom and Gruyère Crustless Quiche is a versatile and delicious dish that’s perfect for any meal of the day. With its creamy texture, rich flavors, and easy preparation, it’s sure to become a favorite in your household. Whether you stick to the classic recipe or try the keto and low-carb variations, this quiche is a delightful addition to your culinary repertoire. Enjoy making and savoring this elegant dish with your family and friends!

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