Mashed Potato and Cheese Puff Casserole

This Mashed Potato and Cheese Puff Casserole is a delightful way to repurpose leftover mashed potatoes into a golden, fluffy, cheesy side dish. While delicious on its own, you can customize it with ham, bacon, or veggies for added flavor and texture, making it versatile for any meal.

Did You Know?
Adding eggs to mashed potatoes creates a light, souffle-like texture when baked. This technique turns humble leftovers into a dish that’s both elegant and comforting. Fun Fact: The fluffy texture is achieved as the eggs help the mixture rise slightly in the oven, giving it that irresistible puff.

Yield
Serves 6

Ingredients

For the Base:
3 cups leftover mashed potatoes
2 large eggs, beaten
1/2 cup milk or cream
1 cup shredded white cheddar cheese
1/4 cup grated Parmesan cheese
1/2 teaspoon garlic powder (optional)
1/4 teaspoon salt (adjust if potatoes are already salted)
1/4 teaspoon black pepper

Optional Add-Ins:
1 cup cooked ham or crispy bacon, diced
1 cup steamed or sautéed vegetables (e.g., spinach, broccoli, or bell peppers)

For the Topping:
1/4 cup shredded cheddar or Parmesan cheese
1 tablespoon butter, melted

Here are some excellent white cheese options that would complement the Mashed Potato and Cheese Puff Casserole:

1. Mozzarella is mild and stretchy, adding a creamy texture without overpowering the dish.

2. Monterey Jack is slightly tangy and melty, making it a great choice for a smooth and rich finish.

3. Swiss cheese offers a nutty flavor that pairs beautifully with the potatoes.

4. Provolone melts well and provides a subtle smokiness for a unique twist.

5. Havarti is buttery and creamy, giving the casserole a luxurious texture.

6. Fontina is a semi-soft cheese with a slightly earthy flavor that adds depth.

7. Gruyère is a more robust, nutty option perfect for creating a gourmet feel.

8. Ricotta, while not a melting cheese, can be added as a layer to give a creamy, slightly sweet contrast.

Instructions

Step 1: Preheat and Prep
Preheat your oven to 375°F (190°C). Grease a 9x9-inch baking dish or equivalent.

Step 2: Mix the Base
In a large mixing bowl, combine the mashed potatoes, beaten eggs, milk or cream, shredded cheddar, Parmesan cheese, garlic powder (if using), salt, and pepper. Mix until smooth and well combined.

Step 3: Add Optional Ingredients
If desired, fold in diced ham, crispy bacon, or steamed vegetables for extra flavor and texture.

Step 4: Assemble the Casserole
Spread the mixture evenly into the prepared baking dish. Sprinkle the top with additional shredded cheese and drizzle with melted butter.

Step 5: Bake
Bake for 25–30 minutes, or until the casserole is puffed, golden brown, and heated through.

Step 6: Serve
Allow the casserole to cool for 5 minutes before serving. Pair it with a fresh salad or roasted veggies for a complete meal.

Nutritional Information (Per Serving)
Calories: 220, Protein: 8g, Carbohydrates: 20g, Fiber: 2g, Net Carbohydrates: 18g, Fat: 12g, Saturated Fat: 6g, Cholesterol: 95mg, Sodium: 360mg, Sugars: 2g, Glycemic Index: Medium

Kitchen Tips, Great Ideas, How to Save Money

1. Use Leftover Mashed Potatoes: Save time by repurposing leftovers from a previous meal.
2. Cheese Options: Swap cheddar with Swiss, Gouda, or Monterey Jack for a new flavor profile.
3. Texture Matters: Whip the mashed potatoes lightly to ensure a smooth mixture that puffs nicely.
4. Meal Prep: Assemble the casserole ahead of time and refrigerate. Bake just before serving.
5. Budget-Friendly: Use store-brand cheese and pantry staples to keep costs low without sacrificing taste.
6. Customize with Veggies: Add nutrient-rich ingredients like spinach, broccoli, or roasted red peppers for color and flavor.
7. Double for a Crowd: Easily scale up the recipe for larger gatherings by using a 9x13-inch baking dish.
8. Freezing Tips: Freeze individual portions for quick meals. Reheat in the oven for the best texture.
9. Topping Variations: Sprinkle with breadcrumbs or crushed crackers mixed with Parmesan for a crispy topping.
10. Leftover Ideas: Serve slices of this casserole as part of a breakfast plate with scrambled eggs and sausage.

Let’s Learn About Egg Magic
Eggs are the secret to the light, airy texture in this casserole. When beaten into the mashed potatoes, the proteins in the eggs help the mixture rise as it bakes, creating a souffle-like puff. This simple addition elevates the dish from ordinary to extraordinary, turning it into a versatile side or main course. For the best results, use fresh, room-temperature eggs, and fold them gently into the mashed potatoes to retain their fluffiness.