Keto Taco Casserole Cheesy (Printable)

A hearty low-carb casserole with seasoned beef, cauliflower rice, and melted cheeses for a comforting meal.

# Components:

→ Meat & Protein

01 - 1 pound ground beef (85% lean)
02 - 1 tablespoon olive oil

→ Vegetables

03 - 1 medium onion, finely chopped
04 - 2 cloves garlic, minced
05 - 1 bell pepper (red or green), diced
06 - 3 cups riced cauliflower (fresh or frozen)
07 - 1 can (10 ounces) diced tomatoes with green chilies, drained

→ Seasonings

08 - 2 tablespoons sugar-free taco seasoning
09 - 1/2 teaspoon salt
10 - 1/4 teaspoon black pepper

→ Dairy

11 - 1 cup shredded cheddar cheese
12 - 1 cup shredded Monterey Jack cheese
13 - 1/2 cup sour cream

→ Optional Toppings

14 - Sliced green onions
15 - Chopped cilantro
16 - Diced avocado

# Directions:

01 - Preheat the oven to 375°F (190°C).
02 - Heat olive oil in a large skillet over medium heat. Add the onion and bell pepper, sauté for 3–4 minutes until softened.
03 - Add garlic and cook for 1 minute until fragrant.
04 - Add ground beef and cook, breaking up the meat, until browned and cooked through—about 5–6 minutes. Drain excess fat if necessary.
05 - Stir in taco seasoning, salt, pepper, and diced tomatoes with green chilies. Cook for 2 minutes.
06 - Add riced cauliflower and cook for another 3–4 minutes until just tender. Remove from heat.
07 - Stir in half of the cheddar and Monterey Jack cheeses, and the sour cream until well combined.
08 - Transfer the mixture to a greased 9x13-inch casserole dish. Sprinkle the remaining cheeses evenly over the top.
09 - Bake for 15–18 minutes, or until the cheese is melted and bubbly.
10 - Let cool for 5 minutes. Garnish with green onions, cilantro, and avocado if desired. Serve hot.

# Expert Advice:

01 -
  • It tastes indulgent and cheesy without derailing your carb count or leaving you feeling deprived.
  • Cleanup is minimal because everything happens in one skillet before it moves to the baking dish.
  • Leftovers actually taste better the next day when all those flavors have had time to get cozy with each other.
02 -
  • Draining those canned tomatoes is non-negotiable because that liquid will pool at the bottom and make your casserole soggy rather than creamy.
  • Don't skip letting the casserole rest for those 5 minutes because it allows everything to set up just enough that you get clean portions instead of a sloppy spoon situation.
03 -
  • Brown your beef in a hot skillet without moving it around too much at first—letting it sit builds better crust and deeper flavor.
  • Mix your sour cream in off the heat so it stays creamy and doesn't break from the direct heat of the skillet.
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