Egg White Keto Bread Recipe: Fluffy Low-Carb Loaf

This egg white keto bread recipe makes a light, high-protein loaf with fewer than 1 gram of net carbs per slice. It uses whipped egg whites, whey protein isolate, cream of tartar, and salt to create a soft bread that works best for toast, sandwiches, and breakfast.

Recipe overview

• Prep time: 15 minutes
• Bake time: 30–35 minutes
• Yield: 10 slices
• Pan size: 8½ × 4½ inches
• Texture: Light, airy, and sliceable
• Diet: Keto, low-carb, and grain-free

The loaf rises because air is whipped into the egg whites. As the bread bakes, egg-white proteins firm around those air bubbles and create its structure.

Cream of tartar stabilizes the foam, while whey protein isolate absorbs moisture and makes the loaf easier to slice. The recipe does not contain gluten, so the texture is lighter and softer than traditional wheat bread.

For the best result:

• Whip the whites to stiff, glossy peaks.
• Use a clean, grease-free bowl.
• Fold the protein powder gently.
• Avoid opening the oven too early.
• Cool the loaf before slicing.

A small amount of shrinking after baking is normal.

Main ingredients

• 1½ cups or 350 grams egg whites
• ½ cup or 60 grams unflavored whey protein isolate
• ½ teaspoon cream of tartar
• ½ teaspoon fine salt

Optional seasonings

• ½ teaspoon garlic powder
• ½ teaspoon onion powder
• 1 teaspoon dried Italian herbs
• 1 tablespoon sesame seeds
• A small amount of powdered keto sweetener

Use unflavored whey protein isolate with little or no added sugar. Collagen, casein, almond flour, and coconut flour cannot replace it in equal amounts.

Yes, but fresh egg whites usually whip more reliably.

Some carton egg whites contain gums, salt, or other additives that reduce their ability to form stiff peaks. Choose a product containing only egg whites and check whether the packaging says it can be used for whipping or meringues.

For better results:

• Bring the whites closer to room temperature.
• Use a clean metal or glass bowl.
• Avoid products labelled as egg substitutes.
• Measure the whites by weight.

When carton whites remain thin after several minutes of mixing, switch to fresh egg whites.

Step 1: Prepare the oven

Preheat a convection oven to 320°F or 160°C. For a conventional oven, use 340°F or 170°C.

Line an 8½ × 4½-inch loaf pan with parchment paper.

Step 2: Whip the egg whites

Add the egg whites to a clean mixing bowl. Beat on low speed until foamy.

Add the cream of tartar and salt. Increase the speed and whip for 5–8 minutes until stiff, glossy peaks form.

The mixture should hold its shape when the whisk is lifted.

Step 3: Fold in the protein powder

Sift the whey protein isolate over the whipped whites in three additions.

Fold gently with a spatula, moving from the bottom of the bowl upward. Stop as soon as no dry powder remains.

Overmixing removes air and produces a short, dense loaf.

Step 4: Fill the pan

Transfer the mixture into the loaf pan without pressing it down. Smooth the top gently and add sesame seeds or herbs if desired.

Step 5: Bake

Bake for 30–35 minutes.

The loaf is ready when:

• The top is lightly golden.
• The center is no longer wet or shiny.
• The surface springs back when touched.
• The internal temperature reaches at least 160°F or 71°C.

Do not open the oven during the first 25 minutes.

Step 6: Cool gradually

Turn off the oven and leave the door slightly open. Let the loaf cool inside for 15–20 minutes.

Remove it from the pan and place it on a wire rack. Wait until completely cool before slicing.

Egg white bread collapses when its structure has not fully set or when too much air is removed during mixing.

Problem	Cause	Solution
Bread does not rise	Whites were not whipped enough	Beat to stiff peaks
Loaf rises then falls	Center was underbaked	Bake 5–8 minutes longer
Dense texture	Batter was overmixed	Fold gently
Wet center	Bread was cut too soon	Cool completely
Large hollow area	Whites were overbeaten	Stop while peaks are glossy
Rubbery crumb	Bread was overbaked	Reduce baking time

Cooling the bread gradually also helps reduce sudden shrinking.

Egg whites become rubbery when cooked for too long or at too high a temperature.

Measure the ingredients carefully and bake only until the center is set. The loaf may feel soft while warm, but it firms as it cools.

To improve the texture:

• Weigh the protein powder.
• Use whey isolate rather than a protein blend.
• Cut thicker slices.
• Toast before serving.
• Avoid reheating in the microwave.

Toasting gives the bread a firmer surface and a more traditional bread-like flavor.

Egg white bread can taste eggy when it is underbaked or sliced while warm.

Allowing it to cool completely lets steam and stronger egg aromas escape. Toasting also improves the flavor.

You can make the loaf more savory by adding:

• Garlic powder
• Onion powder
• Italian herbs
• Sesame seeds
• Everything seasoning

Do not add too much cream of tartar because it may create a sour or metallic taste.

Yes. Egg whites and unsweetened whey protein isolate contain very few carbohydrates.

Approximate nutrition per slice:

• Calories: 40–50
• Protein: 9–10 grams
• Net carbohydrates: Less than 1 gram
• Fat: Less than 1 gram

Nutrition will vary depending on the protein powder and slice size. Because the loaf is low in fat, it can be served with avocado, butter, cheese, mayonnaise, or nut butter.

How Should You Serve It?

Egg white keto bread is best served toasted.

Use it for:

• Avocado toast
• Breakfast sandwiches
• Grilled cheese
• Tuna sandwiches
• Garlic toast
• Keto French toast
• Smoked salmon toast
• Nut butter toast

Thicker slices work better for moist or heavy fillings.

Garlic herb bread

Add garlic powder and dried Italian herbs with the whey protein.

Sesame bread

Sprinkle sesame seeds over the batter before baking.

Cinnamon bread

Add cinnamon and a small amount of powdered keto sweetener.

Everything bread

Sprinkle everything seasoning over the loaf before baking.

Avoid adding heavy ingredients directly to the batter because they can reduce the loaf’s rise.

Cool the loaf completely before storing it.

Keep it in an airtight container in the refrigerator for up to three days. Add a paper towel to absorb excess moisture.

For freezing:

1. Slice the cooled loaf.
2. Place parchment between the slices.
3. Store in a freezer-safe container.
4. Freeze for up to one month.
5. Toast directly from frozen.

A toaster, toaster oven, air fryer, or dry skillet gives the best reheated texture.

Egg White Keto Bread Recipe Card

Ingredients

• 1½ cups or 350 grams egg whites
• ½ cup or 60 grams unflavored whey protein isolate
• ½ teaspoon cream of tartar
• ½ teaspoon fine salt
• Optional herbs, spices, or sesame seeds

Instructions

1. Preheat the oven to 320°F or 160°C convection, or 340°F or 170°C conventional.
2. Line an 8½ × 4½-inch loaf pan with parchment.
3. Beat the egg whites until foamy.
4. Add cream of tartar and salt.
5. Whip until stiff, glossy peaks form.
6. Fold in the sifted whey isolate in three additions.
7. Transfer the batter gently to the loaf pan.
8. Bake for 30–35 minutes.
9. Turn off the oven and cool the loaf inside for 15–20 minutes.
10. Cool completely on a wire rack before slicing.

Frequently Asked Questions

Can I use carton egg whites?

Yes, but choose a carton product suitable for whipping and containing few additives.

Why did my bread collapse?

The center may have been underbaked, the mixture overfolded, or the loaf cooled too quickly.

Why is it wet in the middle?

It likely needs more baking time or was sliced before it had cooled completely.

Can I make it without protein powder?

You can make cloud bread without whey isolate, but it will be softer and less sliceable.

Can I replace whey with almond flour?

No. Almond flour absorbs moisture differently and requires a separate recipe.

Is egg white keto bread gluten-free?

The ingredients are naturally gluten-free, but check that the protein powder is certified gluten-free.

Can I freeze it?

Yes. Freeze individual slices and toast them directly from frozen.

Is it the same as cloud bread?

It is similar, but whey isolate gives this loaf a stronger and more bread-like structure.