There are many varieties of low carb and keto tortillas in grocery stores. Use your favorite low carb corn or flour tortilla in place of traditional ones if you want to save carbs with this recipe. Or make it completely keto by omitting the tortillas and replacing them with thinly sliced zucchini or eggplant. To keep the veggies from making the casserole runny, grill them first. Another way to remove excess moisture is to sprinkle salt on them and let them sit for about 20 minutes. Then rinse and pat dry before assembling the Taco Lasagna.