noob here (both to this site and to cooking in general!). For health reasons I can't really do sugar, and the low-carb thing has saved my life (literally). I am trying to do more low-carb baking at home. The topic of non-sugar sweeteners have been discussed at length (pros/cons, how to substitute, etc). I have used stevia at low temperatures to great success (making home-made drinks, chocolates, gummies, etc).

However, when I try baking with stevia, monk fruit, and/or erithyrol, the batter/dough tastes very sweet, but after baking I cannot taste the sweetness at all.

It's important to note that, unlike other questions, I already (a) can taste the sweetness in these alternative sweeteners (no genetic issue, and I'm okay with aftertastes), (b) have used and enjoyed these sweeteners at low-temperatures, and (c) the sweetness seems to disappear during baking regardless of the sweetener used.

I have already tried:

  • changing the sweetener and mixed sweeteners together (swapping stevia for monk-fruit, mixing them together, etc). Stevia, for example, claims to be heat-stable, and others have claimed success when baking with stevia.
  • changed recipies (cookies, cakes, breads, brownies, etc) and quantities (more sweetener, less; more baking soda/powder, less, etc)
  • changing temperature and cook time

Given (a) that sweeteners like stevia claim to be heat-stable, (b)others seem to have success when baking with them, and (c) I've used these sweeteners with success at low-temps, what could be causing the loss of sweetness during the baking process? Are there any known interactions with, say, vinegar or baking powder that would change the sweeteners during cook-time?

  • I'm fundamentally confused. How do you do baking and still be low carbohydrate? Flour and corn meal are basically just carbohydrates. Sugar is 100% carb by weight and white flour 75%.
    – MaxW
    Commented Feb 11, 2019 at 1:00
  • 1
    @MaxW don't use flour, corn meal, or sugar. Protein powders and almond flour are substitutes (in varying degrees) to flour, and non-nutritive sweeteners instead of sugar. A search for Keto Baking will help you.
    – cegfault
    Commented Feb 11, 2019 at 1:10
  • 2
    @MaxW brownies in particular are very adaptable. They're a good gluten free option if catering for coeliacs. There are also meringues (some don't have much sugar and we had a question recently) and various things based on coconut (coconut pyramids and macaroons which can also be based on other nuts)
    – Chris H
    Commented Feb 11, 2019 at 7:29
  • 1
    I have no experience with this, but you might try making a 'syrup' (sweetened liquid) in this case, and adding it to the item after it's been baked. Like a glaze on a cookie or stabbing holes in and drizzling it over a cake.
    – Joe
    Commented Mar 11, 2019 at 15:56
  • 1
    @NSGod pure stevia powder (mostly) or liquid (occasionally). maltodextrin is a high-GI carbohydrate. It spikes blood glucose more than regular sugar, and has the same calories. Another common bulk ingredient is dextrose - literally table sugar. In low-carb / keto baking, I'm trying to avoid carbs and am choosing low-GI foods. Maltodextrin is probably the worst choice, but seeing how it's a high-GI carb, that would make sense it bakes well and preserves sweetness
    – cegfault
    Commented Jul 22, 2019 at 20:59

3 Answers 3


I hate answering my own question, but after a month I did (finally) find a pseudo-answer that works for Stevia. I've not yet tried it for any other sweeteners.

Melt into fat and freeze it

For example, the recipe I use for cookies needs four (4) tablespoons of melted butter. I started by melting two tablespoons in butter (well, 1TB butter and 1TB cocoa butter but semantics aside...), and mixed half a tablespoon of stevia into the melted butter.

Then I poured the Stevia-butter mix into molds and froze until it was solid.

I proceeded with the rest of the recipe as normal, but after everything was mixed, I took the frozen Stevia-butter, chopped it into very tiny shavings/pieces, and mixed it into the batter.

Poured the cookies on the tray, and baked in the oven. Result: nice, sweet, almost zero carb (~0.05g) cookies!!!

My working theory

I'm not confident in my theory, but I think the fats - especially saturated fats - will protect the Stevia early during the baking process. Couple that with Newton's law of cooling (ie, although the batter is at room temperature the sweetener is at sub-freezing temps, and will therefore take longer to heat up than the rest of the batter). While the batter cooks as normal, the fats will melt into the batter, revealing and mixing the sweetener with it. This minimizes the time the sweetener is exposed to the full-force heat of the oven, which prevents it from degrading under heat.

This may not be the best process for fluffy or flaky goods like breads, but for dense, sweet goods like cookies, muffins, brownies, etc, it works well.

Yet again, that's just a working theory....


Unfortanately with low carb cooking - different sweetners work better with some recipes than others. Allulose is my favorite sugar alternative. It does not affect blood sugar - AT ALL (as a previous type 2 diabetic -this is extremely important to me. Allulose also completely melts - so it's perfect for making things like homemade maple syrup and other syrups. It melts - but does not crystallize when it cools. A touch of allulose in baked goods (like breads) gives the crust a beautiful brown when baking. However, use too much and your baked goods will get too dark. Hence, it really depends on the recipe. You can however, cover the bread (or baked good) with aluminum foil for most of the baking time to prevent this and only remove it during the last 10 -15 mins. Allulose is not good for making cookies - because it causes the cookie to have too much moisture. Erythritol is better for cookies. I use Stevia too - but only in liquids, like morning coffee. There are some stevia blends out there which i've heard are pretty good. I think Truvia is one of them and some people really like that for baking. Currently for bread making, I use 1/4 cp sweetner in my bread. I use 3 Tablespoons of powdered Swerve (erythritol) and 1 Tbsp Allulose. I keep my bread pan covered until the last 10-15 mins and it gives me a beautiful but not overcooked bread loaf. Hope, some of that helps a bit.

  • +1 for allulose, but a word of caution for others on erythritol and other sugar alcohols. Many healthy people cannot tolerate them, and people using keto for mental or physical health should probably avoid sugar alcohols as well.
    – cegfault
    Commented Apr 3 at 17:49

Ditto for me. I love baking with allulose but know it is only 70% as sweet. Since my sweet tooth has gotten smaller eating less sugar I prefer things 70% as sweet (but I use more for friends). Even though it is expensive, I use Wholesome Yum brand because I can't taste any weird aftertaste like most sugar substitutes. They also have fantastic recipes! https://www.wholesomeyum.com/category/low-carb-desserts/

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