Cheesy Sweet Onion and Mushroom Pie with Cracker Crust

Indulge in the savory decadence of this Cheesy Sweet Onion and Mushroom Pie with Cracker Crust—a comforting, flavor-packed dish perfect for any meal. Featuring a buttery, golden cracker crust that adds a delightful crunch, the pie is filled with sweet caramelized onions, tender cremini mushrooms, and an irresistible blend of mozzarella and sharp cheddar cheeses. Infused with aromatic garlic and fresh thyme, this rich filling is elevated with a silky egg and milk custard for the perfect creamy texture. Easy to make yet utterly impressive, this vegetarian pie is baked to golden perfection and garnished with fresh parsley for a burst of color and herbal freshness. Serve it warm for a cozy dinner or as a show-stopping centerpiece for brunch—this dish is sure to captivate with every bite.

Nutriscore Rating: 54/100

Prep Time:25 mins

Cook Time:40 mins

Total Time:65 mins

Servings: 6

Ingredients

• 2 cups (crumbled) buttery crackers (e.g., Ritz)
• 6 tablespoons (melted) unsalted butter
• 2 large (thinly sliced) sweet onions
• 8 ounces (sliced) cremini mushrooms
• 2 tablespoons olive oil
• 2 cloves (minced) garlic
• 1 teaspoon fresh thyme leaves
• 1 teaspoon salt
• 0.5 teaspoon black pepper
• 1 cup shredded mozzarella cheese
• 1 cup shredded sharp cheddar cheese
• 3 large eggs
• 0.5 cup whole milk
• 2 tablespoons (chopped, optional for garnish) fresh parsley

Directions

Step 1

Preheat your oven to 350°F (175°C).

Step 2

In a food processor, pulse the buttery crackers until they form fine crumbs. Alternatively, place the crackers in a zip-top bag and crush them with a rolling pin.

Step 3

In a medium bowl, mix the cracker crumbs with the melted butter until evenly coated.

Step 4

Press the crumb mixture into a 9-inch pie dish, forming an even layer on the bottom and up the sides. Set aside.

Step 5

Heat olive oil in a large skillet over medium heat. Add the sliced onions and cook, stirring occasionally, until they are soft and caramelized, about 12-15 minutes.

Step 6

Add the sliced mushrooms to the skillet and cook until they release their moisture and become tender, about 5-7 minutes.

Step 7

Stir in the minced garlic, thyme leaves, salt, and black pepper. Cook for another 1-2 minutes until fragrant, then remove the skillet from heat. Allow the mixture to cool slightly.

Step 8

In a large mixing bowl, whisk together the eggs and milk. Stir in the shredded mozzarella and cheddar cheeses.

Step 9

Gently fold the cooled onion and mushroom mixture into the egg and cheese mixture until evenly combined.

Step 10

Pour the filling into the prepared cracker crust, spreading it out evenly.

Step 11

Bake the pie in the preheated oven for 35-40 minutes, or until the filling is set and the top is golden brown.

Step 12

Remove the pie from the oven and let it cool for 5-10 minutes before slicing.

Step 13

Garnish with chopped fresh parsley, if desired, and serve warm.

Nutrition Facts

Serving size	(1731.2g)

Amount per serving	% Daily Value*
Calories	4551.9

Total Fat 298.2g	0%
Saturated Fat 121.4g	0%
Polyunsaturated Fat 2.8g
Cholesterol 960.0mg	0%
Sodium 7264.0mg	0%
Total Carbohydrate 358.3g	0%
Dietary Fiber 9.8g	0%
Total Sugars 60.7g
Protein 120.3g	0%

Vitamin D 192.6IU	0%
Calcium 2028.1mg	0%
Iron 14.5mg	0%
Potassium 2407.5mg	0%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 58.4%

Protein: 10.5%

Carbs: 31.2%