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Low Carb Cheesy Taco Casserole - A Cozy, Weeknight Favorite

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Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 6 servings
Ingredients Method

Ingredients
  

  • 1.5 pounds ground beef (85–90% lean is ideal)
  • 1 tablespoon olive oil (only if needed for browning)
  • 1 small onion, diced
  • 1 bell pepper, diced (any color)
  • 2 cloves garlic, minced
  • 2 cups riced cauliflower (fresh or frozen, thawed)
  • 1 (10-ounce) can diced tomatoes with green chiles (drained)
  • 3 tablespoons taco seasoning (store-bought or homemade, low sugar)
  • 1/2 cup beef broth (low sodium)
  • 4 ounces cream cheese (softened)
  • 1/2 cup sour cream
  • 1 1/2 cups shredded cheddar cheese
  • 1 cup shredded Monterey Jack or pepper jack
  • Salt and black pepper to taste
  • Optional toppings: sliced green onions, chopped cilantro, avocado, jalapeños, shredded lettuce, salsa
  • Cooking spray or a little oil for the baking dish

Method
 

  1. Prep the oven and pan: Heat the oven to 375°F (190°C). Lightly grease a 9x13-inch baking dish.
  2. Sauté the aromatics: Warm a large skillet over medium heat. Add a splash of olive oil if needed, then cook the onion and bell pepper for 3–4 minutes until softened. Stir in the garlic for 30 seconds until fragrant.
  3. Brown the beef: Add the ground beef, breaking it up with a spatula. Cook until browned and no longer pink, about 6–8 minutes. Drain excess fat if necessary.
  4. Season and simmer: Stir in the taco seasoning, salt, and pepper. Add the diced tomatoes with green chiles and beef broth. Simmer 3–4 minutes until slightly thickened.
  5. Add the cauliflower rice: Mix in the riced cauliflower. Cook 2–3 minutes to warm through and let it absorb flavor. Taste and adjust seasoning.
  6. Make it creamy: Lower the heat and stir in the cream cheese until melted and smooth. Remove from heat and fold in the sour cream.
  7. Layer the casserole: Spread the beef mixture evenly in the baking dish. Top with cheddar and Monterey Jack in an even layer.
  8. Bake: Bake uncovered for 15–18 minutes until the cheese is melted and bubbling around the edges.
  9. Finish and serve: Let it rest for 5 minutes. Add your favorite toppings like green onions, cilantro, or sliced jalapeños. Spoon into bowls or serve with a side salad.