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Close-up of a homemade taco casserole slice on a ceramic plate, layered with refried beans, seasoned ground beef, diced tomatoes, crushed tortilla chips, and melted cheddar cheese browned on top. The casserole is slightly messy with crispy chip pieces visible throughout and a small pool of juices on the plate. In the background are a 9x13 baking dish with remaining casserole, a ramekin of sour cream, tortilla chips, and a rustic wooden table, all softly blurred by shallow depth of field. Warm natural light highlights the cheesy texture and comforting homemade appearance.
Jana Rae

Taco Casserole

This easy taco casserole layers seasoned ground beef, refried beans, crunchy tortilla chips, and 3 cups of melted cheddar cheese. Ready in 40 minutes. Perfect for busy weeknights!
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Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Servings: 8
Course: Main Course
Cuisine: American, Mexican
Calories: 585
Ingredients Method Notes

Ingredients
  

  • 1 tablespoon olive oil
  • 1½ pounds lean ground beef 675g
  • 1 yellow onion diced (253g)
  • 1 14.5-ounce/411g can diced tomatoes, undrained
  • ¼ cup taco seasoning 32g
  • 2 cups tortilla chips slightly crushed (77g)
  • 1 31-ounce/878g can refried beans
  • 3 cups shredded cheddar cheese 252g
  • ,--Optional Toppings--
  • sour cream
  • diced fresh tomatoes
  • shredded lettuce
  • sliced black olives
  • avocado diced

Method
 

  1. Preheat oven to 375°F (190°C). Lightly grease a 9x13-inch baking dish.
  2. Heat olive oil in a large skillet over medium-high heat. Add diced onion and cook for 2-3 minutes until softened. Add ground beef and cook, breaking it up with a wooden spoon, until browned and no longer pink, about 6-8 minutes. Drain excess grease.
  3. Reduce heat to medium-low. Stir in taco seasoning and diced tomatoes with their juices. Simmer for 3-5 minutes until most of the liquid has reduced slightly.
  4. While beef simmers, place tortilla chips in a sealed zip-top bag and gently crush until you have mostly small pieces with some smaller crumbs. Do not pulverize into dust.
  5. Layer the casserole in this order in the prepared baking dish: refried beans (bottom), half of the crushed tortilla chips, the seasoned ground beef mixture, half of the shredded cheddar cheese, remaining crushed tortilla chips, and remaining shredded cheddar cheese (top).
  6. Bake uncovered for 18-22 minutes, until cheese is fully melted, bubbly around the edges, and lightly golden in spots.
  7. Remove from oven and let rest for 5 minutes before slicing.
  8. Serve warm with desired toppings: sour cream, diced tomatoes, shredded lettuce, black olives, or avocado.

Notes

Taco Seasoning: Use one 1-ounce packet of store-bought taco seasoning or about 3 tablespoons of homemade blend. If using homemade, adjust salt to taste.
Cheese: Freshly shredded cheddar melts much better than pre-shredded bagged cheese. Pre-shredded cheese contains anti-caking agents that prevent smooth melting. A 9-ounce block yields about 3 cups when shredded.
Tortilla Chips: Plain salted restaurant-style chips work best. Avoid thin or "low-fat" chips as they become soggy. For a fun twist, substitute Nacho Cheese Doritos.
Refried Beans: Traditional or vegetarian refried beans both work well. Avoid "fat-free" versions as they don't spread as evenly and can become dry during baking.
Ground Beef: 80/20 (80% lean, 20% fat) provides the most flavor, but 90/10 works well too. If using 80/20, you may need to drain more grease after browning.
Diced Tomatoes: Do not drain the can. The liquid helps create the saucy texture for the beef mixture. Fire-roasted diced tomatoes add extra smoky flavor.
Make Ahead: Assemble the entire casserole (without baking), cover tightly, and refrigerate for up to 24 hours. When ready to bake, add 5-10 minutes to the baking time since starting from cold.
Freezing: This casserole freezes beautifully. Bake as directed, cool completely, wrap tightly with plastic wrap then aluminum foil, and freeze for up to 3 months. Reheat covered at 350°F for 30-40 minutes.
Leftovers: Store in an airtight container in the refrigerator for up to 4 days. Reheat in the microwave or covered in the oven at 350°F for 10-15 minutes.
Soggy Chips? If your tortilla chips lose their crunch, try these fixes: let the beef mixture simmer longer to reduce liquid, don't crush chips too finely, or sprinkle a handful of fresh crushed chips over the top just before serving.