In a blender, combine the cottage cheese and taco seasoning until smooth.
Transfer the blend to a microwave-safe bowl and stir in the shredded cheddar and Rotel tomatoes. If desired, mix in the heavy cream for extra creaminess.
Microwave on high for 90-120 seconds, pausing to stir halfway through, until the cheese is melted and the dip is warm throughout.
Serve with a selection of keto-friendly crunchy snacks such as bell pepper slices, celery, or homemade keto crackers.
