Mexican Keto Casserole

Mexican Keto Casserole

yield: MAKES 6-8 SERVINGS.

total time: 50 MINUTES

prep time: 20 MINUTES

cook time: 30 MINUTES


  • 2 cans (10 oz. each) Ro-Tel Tomatoes with green chiles, mild (If you can’t find Ro-Tel tomatoes where you live, use a 14.5 oz. can petite diced tomatoes and a 4 oz. can diced green chiles.)
  • 1 medium-large onion, chopped small
  • 2 T olive oil, divided
  • 1 lb. cauliflower rice (If you can’t find pre-chopped riced cauliflower in your store, chop a small head of cauliflower in the food processor.)
  • 1/2 cup sliced green onion
  • 1 lb. ground beef
  • 1 T Kalyn’s Taco Seasoning Mix (See note)
  • 1 tsp. salt (or to taste)
  • 2 cups + 1 cup grated Mexican Blend Cheese (Use less cheese if you prefer; we wanted it cheesy!)


  • Dump the Ro-Tel tomatoes into a colander placed in the sink and let them drain while you prep other ingredients.
  • Heat oven to 375F/190C and spray a large casserole dish with olive oil or non-stick spray. (I used an oval-shaped dish that was 11″ long and 8″ wide at the widest point.)
  • Chop the onion, heat 1 tablespoon olive oil in a large frying pan, and cook onion until it’s cooked through and starting to get some color.
  • Add the cauliflower rice and cook over medium-high heat until the moisture in the cauliflower has mostly evaporated and there’s no water in the bottom of the pan, about 3-4 minutes.
  • Turn off heat and stir in the sliced green onions. Transfer the cooked cauliflower rice to a bowl.
  • Heat the second tablespoon of olive oil to the pan, add the ground beef, and cook until it’s browned, breaking apart with a turner as it cooks. Add the Taco Seasoning and cook 1-2 minutes more, then add the drained Ro-Tel Tomatoes and cook another minute or two.
  • Stir in the cauliflower rice, season with salt to taste, and cook until it’s heated through.
  • Turn off heat and stir in 2 cups grated Mexican blend cheese.
  • Transfer mixture to the casserole dish and top with another cup of grated Mexican Blend.
  • Bake about 30 minutes, or until the casserole is bubbling hot and cheese is nicely browned on top.
  • Serve hot, with things like salsa, green tabasco sauce , Sour Cream, Guacamole, Pico de Gallo, or chopped avocado to add at the table as desired.


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