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Prep Time: 15 minutes
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Cook Time: 35 minutes
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Total Time: 50 minutes
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Yield: 1 loaf (about 8-10 slices)
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Category: Bread, Low-Carb, Keto
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Method: Baking
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Cuisine: American
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Diet: Gluten-Free, Keto, Low-Carb
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Difficulty: Easy
Ingredients
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8 large egg whites, at room temperature
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1/2 teaspoon cream of tartar
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1/2 cup plain full-fat Greek yogurt (or cottage cheese, blended until smooth)
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1/4 teaspoon sea salt
Optional but recommended:
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1 tablespoon unflavored collagen peptides or grass-fed gelatin (for added structure and protein, helps mimic bread texture)
Nutritional Information (per slice, based on 8 slices)
Note: Nutritional values are estimates and can vary based on specific ingredients used.
| Nutrient | Amount |
|---|---|
| Calories | 45-55 kcal |
| Protein | 8-10 g |
| Fat | 1-2 g |
| Carbohydrates | <1 g |
| Fiber | 0 g |
| Sugar | <1 g |
| Sodium | 115 mg |
Equipment Needed
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Electric hand mixer or stand mixer with a whisk attachment
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Large mixing bowl (ensure it is completely clean and dry)
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Medium mixing bowl
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Rubber spatula
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Loaf pan (approx. 8.5 x 4.5 inches)
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Parchment paper
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Wire cooling rack
Step-by-Step Instructions
1. Prepare for Success (5 minutes)
The most important step for this recipe is preparation. Begin by preheating your oven to 325°F (160°C) . Line your loaf pan with a sheet of parchment paper, leaving some overhang on the long sides to act as handles for easily lifting the bread out after baking. Separate your eggs if you haven’t already, placing the whites in the bowl of your stand mixer. It is crucial that your mixing bowl and whisk are spotlessly clean; any trace of fat (like yolk) can prevent the egg whites from whipping properly.
2. Whip the Egg Whites (5-7 minutes)
Add the cream of tartar to the bowl with the egg whites. The cream of tartar is an acid that stabilizes the egg whites, helping them form stiff peaks and hold their structure during baking. Using your electric mixer, start on low speed and gradually increase to medium-high. Beat the egg whites until they form stiff peaks. This means when you lift the whisk attachment, the peaks of foam stand straight up without flopping over. The mixture should look glossy and white. Be careful not to over-whip, or the mixture can become dry and grainy.
3. Prepare the Yogurt Mixture (2 minutes)
While the egg whites are whipping, combine the Greek yogurt (or blended cottage cheese) and salt in a separate medium bowl. If you’re using collagen or gelatin, whisk it into the yogurt mixture now. Stir until the mixture is completely smooth and there are no lumps.
4. The Gentle Fold (3 minutes)
This is the most critical step to keep your bread light and airy. Using a rubber spatula, add about a quarter of the whipped egg whites to the yogurt mixture. Gently stir this in to lighten the yogurt mixture, making it easier to combine with the rest of the whites.
Now, pour the lightened yogurt mixture back into the bowl with the remaining egg whites. Carefully fold the mixtures together. To fold, cut down through the center of the mixture with your spatula, scrape along the bottom of the bowl, and bring the spatula up and over the top, turning the bowl slightly as you go. Repeat this motion until just combined. The goal is to incorporate the yogurt without deflating the precious air bubbles you created in the egg whites. The batter will be light and foamy, with no large streaks of white.
5. Bake to Golden Perfection (30-35 minutes)
Gently pour the batter into your prepared loaf pan and smooth the top with your spatula. Place the pan in the preheated oven. Bake for 30-35 minutes, or until the top is a deep golden brown and feels firm and springy to the touch. A toothpick inserted into the center should come out clean.
6. The Crucial Cool Down (1+ hours)
Remove the pan from the oven and place it on a wire cooling rack. Let the bread cool in the pan for about 10-15 minutes. Then, using the parchment paper handles, carefully lift the bread out of the pan and place it directly on the wire rack to cool completely.
Do not slice the bread until it is 100% cool. This is essential. The bread continues to set its structure as it cools. Slicing it while still warm will result in a gummy, compressed texture. Allow it to cool for at least an hour for the best results.
Recipe Notes & Tips for Success
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Cleanliness is Key: Any fat or yolk in your egg whites will prevent them from whipping. Separate your eggs carefully, and ensure your bowl and whisk are grease-free .
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Room Temperature Eggs: Egg whites whip to a much greater volume when they are at room temperature.
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Flavor Variations: This bread is a blank canvas. For a savory loaf, fold in 1/4 cup of grated Parmesan cheese, a teaspoon of garlic powder, or some dried herbs like rosemary or thyme into the yogurt mixture. For a slightly sweet version, add a pinch of cinnamon and a few drops of liquid stevia.
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Toasting is Best: While delicious fresh, this bread truly shines when toasted. Toasting gives it a firmer texture and a wonderful flavor.