Making your own keto sandwich bread at home is easier than you might think, and this sour cream version delivers amazing results every single time. The bread comes out soft, fluffy, and perfect for any sandwich you can imagine.

This recipe uses simple ingredients that most people already have in their kitchen. You don’t need any special equipment or complicated techniques to get great results.
The secret ingredient here is sour cream, which adds moisture and helps create that perfect bread texture we all miss on a low carb diet. It also gives the bread a subtle tangy flavor that works well with both sweet and savory toppings.

Once you try this recipe, you’ll never want to buy expensive keto bread from the store again. It’s fresh, homemade, and costs much less than anything you can find in stores.
This bread stays fresh for several days and makes the perfect base for sandwiches, toast, or just eating plain with some butter on top.
👍 Why You’ll Love This Recipe
Perfect Sandwich Texture- This recipe uses separated eggs and whipped egg whites to create the fluffy, light texture that makes real sandwich bread so amazing.
Actually Holds Together- The xanthan gum in this recipe prevents your bread from crumbling apart when you try to make a sandwich, which is a huge problem with most keto breads.

Tastes Like Real Bread- The sour cream adds a subtle tangy flavor that mimics the taste of traditional sourdough bread without any weird artificial flavors.
Simple Pantry Ingredients- You probably already have most of these ingredients at home, and the ones you don’t have are easy to find at any grocery store.
✨ Recipe Ingredients
- 2 cups Super Fine Almond Flour – I recommend this one (amazon)
- 2 tsp Baking Powder
- 1/2 tsp Baking Soda
- 1/2 tsp Xanthan Gum
- 1/2 tsp Sea Salt
- 3 Large Eggs (Separated)
- 6 oz cup Full-Fat Sour Cream (Room temp)
- 3 tbsp Melted Butter (Cooled)
👨🍳 How To Make
Follow this easy recipe:
Step 1
Preheat oven to 350°F (175°C). Line a standard 8×4 loaf pan with parchment paper.
Step 2
In a small bowl, whisk together the almond flour, baking powder, baking soda, xanthan gum, and salt.
Step 3
In a large bowl, whisk the egg yolks, sour cream, and melted butter until smooth and pale. Stir in the dry ingredients – a thick dough will form.
Step 4
In a separate clean glass bowl, beat the egg whites to stiff peaks. Gently fold 1/3 of the egg whites into the dough to loosen it up. Then, very gently fold in the remaining whites.

Step 5
Pour into the pan and smooth the top.

Bake for 40-45 minutes. The top should be golden brown and a toothpick should come out clean. Let it cool for 30 minutes then slice and serve. Enjoy!

💡Tips
1. Room Temperature Ingredients Matter
Bringing your sour cream to room temperature before mixing is absolutely crucial for achieving the smoothest batter possible.
Cold sour cream will create lumps and won’t blend properly with the egg yolks, leading to an uneven texture in your finished bread.

The melted butter should also be cooled to room temperature before adding it to prevent the mixture from curdling. Hot butter can scramble the egg yolks and ruin your batter completely.
2. Don’t Skip the Xanthan Gum
Xanthan gum acts as the gluten replacement in this keto bread, providing the structure that wheat flour normally would.
Without it, your bread will crumble apart and won’t hold together for proper sandwich slices.
Measure the xanthan gum carefully since too much can make the bread gummy and dense. A half teaspoon is the perfect amount for this recipe size.

3. Master the Egg White Technique
Using a completely clean glass bowl is essential when whipping egg whites because any trace of fat or yolk will prevent them from reaching stiff peaks.
Even a tiny bit of grease can ruin the whole process and leave you with flat, lifeless whites.
Fold the egg whites in two stages – first adding one-third to lighten the dense batter, then gently incorporating the rest. This method preserves the air bubbles that make your bread light and fluffy instead of dense and heavy.

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FAQ
Can I skip the xanthan gum or substitute it with something else?
Xanthan gum is absolutely essential for this recipe because it provides the structure and binding that regular flour would give. Without it, your bread will crumble and fall apart when you try to slice it.
You can substitute xanthan gum with guar gum using the same amount, but psyllium husk powder won’t work well here. If you absolutely cannot find either xanthan or guar gum, the bread simply won’t hold together properly for sandwiches.
Why do I need to separate the eggs and beat the whites?
Separating the eggs and whipping the whites creates the light, fluffy texture that makes this bread actually feel like real sandwich bread. The beaten egg whites trap air bubbles that help the bread rise and stay tender instead of dense.
If you skip this step and just use whole eggs, you’ll end up with a heavy, dense loaf that’s more like a brick. The extra effort of separating eggs makes a huge difference in the final texture.
Keto Sour Cream Sandwich Bread
Print Recipe- electric mixer
- loaf pan
Ingredients
- 2 cups Super Fine Almond Flour I recommend this one (amazon)
- 2 tsp Baking Powder
- 1/2 tsp Baking Soda
- 1/2 tsp Xanthan Gum (Vital for structure/sturdiness)
- 1/2 tsp Sea Salt
- 3 Large Eggs (Separated)
- 6 oz Full-Fat Sour Cream (Room temp)
- 3 tbsp Melted Butter (Cooled)
Instructions
- Preheat oven to 350°F (175°C). Line a standard 8x4 loaf pan with parchment paper.
- In a small bowl, whisk together the almond flour, baking powder, baking soda, xanthan gum, and salt.
- In a large bowl, whisk the egg yolks, sour cream, and melted butter until smooth and pale. Stir in the dry ingredients - a thick dough will form.
- In a separate clean glass bowl, beat the egg whites to stiff peaks. Gently fold 1/3 of the egg whites into the dough to loosen it up. Then, very gently fold in the remaining whites.
- Pour into the pan and smooth the top. Bake for 40-45 minutes. The top should be golden brown and a toothpick should come out clean. Let it cool for 30 minutes then slice and serve. Enjoy!
Best bread ever!
Just took out of the oven and it looks/smells great. The 30 minute wait is going to be painful. 😃
🙂
Just wish you would post net carbs- thanks-it’s delicious