This low carb ranch dressing is my five-minute cheater, built from a seasoning packet with heavy cream and water in place of the milk, which keeps it to about 1 gram of net carbs a serving and pushes the macros toward fat instead of milk sugar. Below the recipe are the fixes for thin, thick, or too-tangy ranch, and a from-scratch herb blend for anyone who would rather skip the packet.
I rarely ever buy pre-made dressings at the grocery store because they are full of hidden carbs, but I do purchase the dry mixes and make a few modifications to make them Low in Carbs. My favorite is ranch dressing. This is my secret cheater recipe.
Simply buy the Hidden Valley Ranch Dressing Mix and substitute one cup of milk with half a cup of heavy cream and half a cup of water along with the one cup of mayonnaise. Mix everything together and it will be some of the best ranch dressing you will ever make. By doing this you will dramatically reduce the amount of carbs in the dressing.
Why this stays about 1 gram of net carbs
The seasoning packet is the only real source of carbs here, and it is low to begin with, about 1 gram of net carbs in a 2 tablespoon serving whether you mix it with milk or with cream. Trading the milk for half a cup of heavy cream and half a cup of water keeps it there while swapping milk sugar for fat, so the macros land where a keto plan wants them. The mayonnaise carries the body and the fat, so it tastes like full-fat ranch, not a diet version. The real win over a bottled dressing is the short ingredient list: no added sugars or soybean-oil fillers, just the mix, mayo, and cream.
Fixing thin, thick, or too-tangy ranch
Ranch is forgiving, and the few ways it goes wrong are easy to walk back. If it comes out too thin, give it the full chill in the fridge, since it firms as it sits; you can also pull back the water or add a spoon more mayonnaise. If it sets too thick, loosen it with a little water or cream, a teaspoon at a time. If the flavor reads too sharp or salty, you likely have too much mix for the liquid, so stir in a bit more cream to round it off. And if the herbs taste flat right after mixing, that is normal; let the dressing rest for 30 minutes or more and they bloom into it.
Make it from scratch without the packet
To skip the mix entirely, whisk your own blend into the cup of mayonnaise, half cup of cream, and half cup of water: 1 teaspoon dried parsley, 1 teaspoon dried dill, half a teaspoon garlic powder, half a teaspoon onion powder, and a quarter teaspoon each of salt and pepper. Traditional ranch leans on buttermilk for its tang, so if you miss that bite, add a small splash of lemon juice or vinegar to mimic it. The from-scratch route lets you control the salt and skip the additives in the packet.
Storage
Keep the ranch in an airtight jar in the fridge for up to a week. Give it a stir before each use, since it thickens as it sits and a little separation is normal. It is the dressing I keep on hand all week, good on buffalo wings, spooned over a cobb salad, or used as a dip for parmesan garlic green bean fries.
Sources
Carb Manager, Hidden Valley Ranch seasoning mix and prepared dressing nutrition, 2026.
USDA FoodData Central, heavy cream and mayonnaise nutrient references.
Sugarfreechic test kitchen, low-carb dressing notes.
