Preheat the oven to 350°F (175°C). Prepare a deep baking dish approximately 4-inch wide and 12-inch long. No need to line it with parchment paper. Begin by separating two eggs: Put two egg whites into a medium bowl and store two egg yolks separately (one in a small dish, the other in a medium bowl).
In a bowl, sift together the flours and mix them with baking powder, psyllium husk powder, and erythritol. In another bowl, mix a whole egg with one egg yolk.
Put shredded mozzarella and butter in a microwave-safe bowl. Microwave for 2 minutes on 400W power.
Stir with a spatula and add the flour mixture. Mix with your hands if not too hot. Add the egg mixture and knead. Microwave for 15 seconds more and knead again until you get almost an entirely uniform dough.
Put a sheet of parchment paper underneath the dough and another sheet of parchment on top of it. Roll the dough out into a square shape of the same width as the baking dish. Set aside.
The filling
In a medium bowl, mix together the sour cream, erythritol, ground almonds, and tarragon.
In another bowl, mix the egg whites until fluffy. Add cream of tartar and mix until soft peaks form. Carefully fold the whites into the filling.
Assembly
Spread the melted butter on the rolled-out dough. Now, spread the filling as well.
Helping yourself with the parchment paper, roll together the tarragon roll, lift it up and place into the baking dish.
Spread the remaining egg yolk on top of the roll. Poke some holes into the roll and place in the oven.
Bake for approximately 45 minutes. Let it cool on a rack. Prepare for your kitchen to smell amazing! Before serving, sprinkle with some powdered erythritol. Cut out 12 pieces and enjoy.
Nutrition
Calories: 153kcal
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