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Sweet Potato Fries Casserole recipe


  • Author: Caroline

Ingredients

Scale

  • 2 large sweet potatoes (about 2 pounds), peeled and cut into fries: Sweet potatoes are the undeniable star of this casserole, providing their signature sweetness, vibrant color, and creamy texture when cooked. Choose firm sweet potatoes that are heavy for their size. The size of your sweet potatoes will determine the overall quantity, so aim for about 2 pounds total. Cutting them into fries ensures they cook evenly and create that familiar fry texture within the casserole.
  • 2 tablespoons olive oil: Olive oil is used for roasting the sweet potato fries, helping them to crisp up and develop flavor. Extra virgin olive oil is recommended for its richer flavor and health benefits, but regular olive oil works perfectly well too.
  • 1 teaspoon paprika: Paprika adds a subtle smoky sweetness and a beautiful reddish hue to the sweet potato fries. Smoked paprika will enhance the smoky flavor even further, while sweet paprika provides a milder, sweeter note.
  • 1 teaspoon garlic powder: Garlic powder provides a savory depth and aromatic warmth that complements the sweetness of the sweet potatoes. It’s a convenient way to add garlic flavor evenly to the fries.
  • 1/2 teaspoon onion powder: Onion powder enhances the savory notes and adds a subtle onion flavor that pairs well with the garlic and paprika. It contributes to the overall savory base of the casserole.
  • 1/2 teaspoon salt: Salt is essential for enhancing the flavors of all the ingredients and balancing the sweetness. Use kosher salt or sea salt for the best flavor. Adjust the amount to your taste preference.
  • 1/4 teaspoon black pepper: Freshly ground black pepper adds a touch of spice and complexity, complementing the other seasonings. Adjust the amount to your taste preference.
  • 1 tablespoon butter: Butter is used to sauté the onions, adding richness and flavor. Unsalted or salted butter can be used, adjust the salt in the recipe accordingly.
  • 1 medium yellow onion, thinly sliced: Yellow onion adds a savory sweetness and aromatic depth to the casserole filling. Thinly slicing the onion allows it to soften and caramelize beautifully during sautéing, releasing its sweet and savory flavors.
  • 2 tablespoons all-purpose flour: All-purpose flour is used as a thickening agent for the creamy sauce, creating a smooth and luscious texture. Gluten-free all-purpose flour blends can be used for a gluten-free version.
  • 2 cups milk: Milk forms the liquid base of the creamy sauce. Whole milk will provide the richest flavor and creamiest texture, but 2% milk or even non-dairy milk like almond milk or oat milk can be used as lighter alternatives.
  • 1 cup shredded cheddar cheese: Cheddar cheese provides a classic cheesy flavor and melts beautifully, creating a gooey and satisfying layer in the casserole. Sharp cheddar cheese is recommended for its bolder flavor that stands up well against the sweet potatoes, but mild or medium cheddar can also be used.
  • 1/2 cup shredded Monterey Jack cheese: Monterey Jack cheese adds a mild, buttery flavor and excellent melting properties, contributing to the overall cheesy richness of the casserole. It complements the cheddar cheese and adds a smooth, creamy texture.
  • 1/2 cup panko breadcrumbs: Panko breadcrumbs provide a crispy and golden topping for the casserole, adding a delightful textural contrast to the creamy filling. Panko breadcrumbs are preferred over regular breadcrumbs for their lighter and crispier texture.
  • 2 tablespoons melted butter (for topping): Melted butter is drizzled over the panko breadcrumbs, helping them to brown and crisp up beautifully in the oven, creating a golden and irresistible topping.

Instructions

Step 1: Prepare the Sweet Potato Fries (Crispy Foundation)

  1. Preheat Oven and Prepare Baking Sheet: Preheat your oven to 400°F (200°C). Line a large baking sheet with parchment paper for easy cleanup and to prevent sticking.
  2. Toss Sweet Potato Fries with Oil and Spices: In a large bowl, toss the sweet potato fries with 2 tablespoons of olive oil, paprika, garlic powder, onion powder, salt, and black pepper. Ensure the fries are evenly coated with the oil and spices for maximum flavor and even roasting.
  3. Arrange Fries on Baking Sheet: Spread the seasoned sweet potato fries in a single layer on the prepared baking sheet. Avoid overcrowding the pan, as this can cause the fries to steam instead of roast and crisp up. If necessary, use two baking sheets or bake in batches.
  4. Roast Sweet Potato Fries: Roast in the preheated oven for 20-25 minutes, flipping halfway through, or until the fries are tender and lightly golden brown. Flipping ensures even cooking and browning on both sides. They don’t need to be fully cooked at this stage, as they will continue to bake in the casserole.
  5. Set Aside Fries: Once roasted, remove the sweet potato fries from the oven and set aside while you prepare the rest of the casserole.

Step 2: Sauté the Onions (Savory Base)

  1. Melt Butter in Skillet: In a large skillet (oven-safe skillet preferred, if available, otherwise use a separate casserole dish later), melt 1 tablespoon of butter over medium heat.
  2. Add Sliced Onions: Add the thinly sliced yellow onion to the melted butter.
  3. Sauté Onions until Softened: Sauté the onions, stirring occasionally, for about 5-7 minutes, or until they are softened and translucent. Sautéing softens the onions and brings out their sweetness, creating a flavorful base for the casserole filling. Do not brown them at this stage.

Step 3: Make the Creamy Sauce (Rich and Luscious)

  1. Sprinkle Flour over Onions: Sprinkle the all-purpose flour over the sautéed onions in the skillet.
  2. Cook Flour for 1 Minute: Cook the flour, stirring constantly, for about 1 minute. This cooks out the raw flour taste and creates a roux, which will thicken the sauce.
  3. Gradually Whisk in Milk: Gradually whisk in the milk, a little at a time, stirring constantly to prevent lumps from forming. Continue whisking until all the milk is incorporated and the mixture is smooth.
  4. Simmer Sauce until Thickened: Bring the milk mixture to a simmer over medium heat, stirring constantly. Reduce the heat to low and simmer for 2-3 minutes, or until the sauce thickens slightly and coats the back of a spoon. Simmering allows the sauce to thicken and become creamy.
  5. Remove from Heat: Once the sauce has thickened, remove the skillet from the heat.

Step 4: Assemble the Casserole (Layering Flavors and Textures)

  1. Layer Half of Sweet Potato Fries in Skillet (or Casserole Dish): If using an oven-safe skillet, keep the sauce in the skillet. If using a separate casserole dish, transfer the sauce to a 9×13 inch casserole dish. Spread half of the roasted sweet potato fries in an even layer over the bottom of the skillet or casserole dish, on top of the creamy sauce.
  2. Sprinkle with Half of the Cheese: Sprinkle half of the shredded cheddar cheese and half of the shredded Monterey Jack cheese evenly over the layer of sweet potato fries.
  3. Repeat Layers: Repeat the layers with the remaining sweet potato fries and remaining cheese. Layering ensures that cheese is melted throughout the casserole and not just on top.

Step 5: Prepare the Breadcrumb Topping (Crispy Finish)

  1. Combine Panko and Melted Butter: In a small bowl, combine the panko breadcrumbs and 2 tablespoons of melted butter. Toss to coat the breadcrumbs evenly with the butter. This buttery coating will help the breadcrumbs brown and crisp up beautifully in the oven.
  2. Sprinkle Breadcrumb Topping over Casserole: Sprinkle the buttered panko breadcrumbs evenly over the top layer of cheese in the casserole dish.

Step 6: Bake the Casserole (Golden and Gooey Goodness)

  1. Bake in Preheat Oven: Bake the assembled casserole in the preheated 400°F (200°C) oven for 15-20 minutes, or until the topping is golden brown and the cheese is melted and bubbly. Baking finishes cooking the casserole, melts the cheese, and crisps up the breadcrumb topping.
  2. Let Rest Briefly: Remove the Sweet Potato Fries Casserole from the oven and let it rest for 5-10 minutes before serving. This allows the casserole to set slightly and makes it easier to serve.

Step 7: Serve and Enjoy! (Casserole Bliss)

  1. Garnish (Optional): Garnish with fresh chopped parsley or chives, if desired, for a touch of freshness and color.
  2. Serve Warm: Serve the Sweet Potato Fries Casserole warm as a side dish. It’s best enjoyed fresh from the oven when the topping is crispy and the cheese is melted and gooey.

Nutrition

  • Serving Size: one normal portion
  • Calories: 350-400
  • Sugar: 10-12g
  • Sodium: 400-500mg
  • Fat: 20-25g
  • Saturated Fat: 10-12g
  • Unsaturated Fat: 8-12g
  • Carbohydrates: 35-40g
  • Fiber: 4-5g
  • Protein: 10-12g
  • Cholesterol: 50-60mg