Want to understand sweeteners in depth?
Our sweetener guide breaks down how erythritol, monk fruit, allulose, and stevia each behave in a frozen pint — and which ones to avoid.
Ranked: Naturally Sweetened Powders
Top 10 of 52 tested
Levels
Vanilla Bean
Elite
363
Cal / Pint
46g
Protein / Pint
9.5
Score
363
Cal / Pint
46g
Protein / Pint
9.5
Score
Shockingly close to real vanilla ice cream — clearly top-tier compared to most vanilla powders. It's the rare "actually craveable" vanilla, and a perfect base when you want classic ice-cream vibes without needing mix-ins (although still lethal with Oreo thins). I cannot get enough of this vanilla base flavor.
Levels
Cappuccino
Elite
363
Cal / Pint
46g
Protein / Pint
9.4
Score
363
Cal / Pint
46g
Protein / Pint
9.4
Score
This Levels Cappuccino is an absolute game-changer, spinning into a dense, creamy texture that's reminiscent of a frozen dessert. I was genuinely shocked by how distinct and authentic the cappuccino flavor comes through; it's not weak or muted at all, and that real coffee note holds up perfectly after freezing and spinning. With clean sweeteners like Stevia and Monk Fruit, there's no artificial aftertaste, just pure, satisfying coffee goodness. This is a must-have for coffee lovers. Bought a full tub.
FlavCity
Mint Chocolate
Elite
403
Cal / Pint
47g
Protein / Pint
9.3
Score
403
Cal / Pint
47g
Protein / Pint
9.3
Score
Wonderful — tastes like the real thing. Mint is perfectly balanced and not overpowering, and the texture spins out great. Best with plain Oreos; Oreo Thins can be a bit too strong. Definitely a rebuy.
Glucosylated Stevia Extract (Leaf), OnoSweet™Fermented Reb M
ORGANIC STEVIA LEAF EXTRACT, MONK FRUIT EXTRACT
Stevia Leaf Extract, Monk Fruit
Stevia Leaf Extract
Stevia Leaf Extract, Monk Fruit Extract
ORGANIC STEVIA LEAF EXTRACT, MONK FRUIT EXTRACT
Glucosylated Stevia Extract (Leaf), OnoSweet™ Fermented Reb M
All macros are for the pure pint (no mix-ins) using the standard recipe. Click any row to view the full review.
Why Sweetener Choice Matters More Than You Think
Sucralose and ace-K (acesulfame potassium) are the two most common artificial sweeteners in protein powder, and both have a well-documented problem in frozen applications: they taste increasingly bitter as temperature drops. In a Ninja Creami pint, which is served at sub-zero temperatures, this bitterness is amplified. Erythritol and monk fruit, by contrast, are largely temperature-stable and produce a clean, neutral sweetness that doesn't fight the flavor of the powder. Allulose is especially interesting for frozen applications — it has a slight cooling effect that can make a pint taste even more like real ice cream. Stevia can work well in small amounts but can turn bitter in larger quantities, so the best stevia-sweetened powders use it as a secondary sweetener rather than the primary one.
Frequently Asked Questions
Why do some protein powders taste bitter in a Ninja Creami?
Artificial sweeteners like sucralose and ace-K become noticeably more bitter at low temperatures. Since a Ninja Creami pint is served frozen, this bitterness is amplified compared to a room-temperature shake. Switching to a naturally sweetened powder — one using erythritol, monk fruit, or allulose — usually eliminates this problem entirely.
What is the best natural sweetener for Ninja Creami protein ice cream?
Erythritol and monk fruit are the gold standard. They're temperature-stable, don't cause digestive issues in the amounts used in a single pint, and produce a clean sweetness that doesn't interfere with the flavor of the powder. Allulose is an excellent alternative that also has a slight cooling effect — ideal for frozen applications.
Are naturally sweetened protein powders lower in calories?
Not necessarily. The calorie difference between naturally and artificially sweetened powders is usually minimal — the sweetener itself contributes very few calories either way. The macros are determined by the protein source and any added fats or carbs, not the sweetener. Check the rankings above for the full macro breakdown of each powder.
Is stevia a good sweetener for Ninja Creami?
Stevia can work well in small amounts, but it has a more noticeable aftertaste than erythritol or monk fruit at higher concentrations. The best stevia-sweetened powders use it as a secondary sweetener blended with erythritol or monk fruit. Pure stevia powders can taste slightly bitter in a frozen pint.
See All Powders Ranked
The full rankings table with every powder we've tested, sortable by score, calories, and protein.