Dump frozen waffle fries in the casserole dish and 4 simple pantry staples to create a fiesta-ready meal so scrumptious your entire family will be begging for more!

This 5-ingredient oven baked fiesta casserole is what I reach for on busy weeknights when I want something fun, filling, and almost embarrassingly easy. It leans into the convenience of frozen waffle fries and a few trusty pantry staples—canned beans, salsa, shredded cheese, and taco seasoning—to create a Tex-Mex–inspired bake that tastes like loaded nachos crossed with a cozy casserole. Everything is simply dumped into a glass baking dish, stirred, topped, and baked, giving you a fiesta-ready meal with minimal chopping and almost no cleanup.

Serve this casserole hot, straight from the oven, with a simple green salad dressed in lime and olive oil to balance the richness. A bowl of sliced fresh jalapeños, chopped cilantro, and lime wedges on the table lets everyone customize their plate. It pairs nicely with corn on the cob or steamed frozen corn tossed with a bit of butter and chili powder. For drinks, try sparkling water with a squeeze of citrus or a light beer to complement the bold, Tex-Mex flavors.

Servings: 4

1 (20–24 oz) bag frozen waffle fries

Preheat your oven to 400°F (200°C). Lightly grease a 9x13-inch oven-safe glass casserole dish with a bit of oil or nonstick spray, if desired, to help with cleanup.

Dump the frozen waffle fries into the prepared glass casserole dish, spreading them into an even layer that covers the bottom. It’s fine if they overlap slightly; they’ll bake and soften into the casserole.

In a medium bowl, stir together the black beans, salsa, and taco seasoning until the beans are evenly coated and the seasoning is fully incorporated into the salsa. This creates the wet, flavorful mixture that will coat the fries.

Pour the bean-and-salsa mixture evenly over the frozen waffle fries in the casserole dish, making sure to cover as many fries as possible. Use a spatula or spoon to gently nudge the mixture into the nooks and crannies so everything is lightly coated.

Cover the casserole dish tightly with foil and bake for 20–25 minutes, until the waffle fries are tender when pierced with a fork and the salsa mixture is bubbling around the edges.

Remove the foil, sprinkle the shredded cheese evenly over the top, and return the dish to the oven, uncovered. Bake for another 8–10 minutes, or until the cheese is fully melted and lightly bubbly.

Let the casserole rest for 5 minutes before serving to allow it to set slightly and cool just enough to handle. Scoop into bowls or onto plates, making sure each serving gets a good mix of cheesy fries, beans, and sauce.

For a spicier version, use hot salsa and add a pinch of cayenne or crushed red pepper to the bean mixture. If you prefer meat, you can fold 1 to 1 1/2 cups of cooked, crumbled taco-seasoned ground beef, turkey, or shredded rotisserie chicken into the bean and salsa mixture before baking, keeping in mind that this adds an extra ingredient beyond the base five. To make it a bit lighter, choose reduced-fat cheese and serve generous portions of fresh toppings like shredded lettuce, diced tomatoes, and extra salsa on the side instead of adding more cheese. You can also swap black beans for pinto beans or a three-bean blend, depending on what you have in the pantry. For a crispier top layer, broil the casserole for 1–2 minutes after the cheese has melted, watching carefully so it doesn’t burn. Food safety tips: If you add any cooked meat, ensure it was previously cooked to a safe internal temperature (165°F/74°C for poultry, 160°F/71°C for ground beef) before mixing into the casserole. Because the waffle fries start frozen, avoid leaving them at room temperature for long periods; transfer them directly from the freezer to the baking dish and then into the preheated oven. Always handle the hot glass casserole dish with dry oven mitts and place it on a heat-safe surface to prevent burns or thermal shock.