Gluten Free Quark and Sour Cream Baked Cheesecake
6 large eggs, separated
1 cup sugar
2 teaspoons pure vanilla extract*
2 8 oz Vermont Creamery quark cheese*
1 16 oz sour cream
4 tbls cornstarch
*(You can use 3 8 oz Vermont Creamery quark cheese and 8 oz sour cream if you wish instead of the measurements above)
Put an oven safe pan full of tap water in the bottom rank of the oven and preheat the oven at 464F.
Grease a 10 inch springform round cake pan, line the bottom and sides with parchment paper and grease the parchment paper.
Beat the egg whites in a mixer with whisk attachment on medium high speed for about 2 minutes until frothy. Add the sugar gradually while increasing the speed to higher (but not at the highest) and whisk for 2 minutes longer. Increase the speed to the highest setting and whisk for 2-3 minutes longer until the egg whites soft peak but aren't too stiff. Do not over beat.
Whisk into a separate large bowl the egg yolks, vanilla, quark cheese, sour cream and cornstarch and whisk manually for a couple of minutes until the mixture is smooth.
With a rubber spatula fold the egg whites in batches into the cheese/egg yolk mixture until incorporated well. The mixture will be thick and liquid-like but will still hold its volume.
Pour the cake batter into the pan and bake in the middle of the oven for 15-20 minutes (at the most) until the top is golden and the cake puffs. Reduce the heat to 320F and continue baking for 1 hour and 10-20 minutes longer without opening the oven for the entire duration of the baking. The cake will be somewhat wobbly in the middle, not completely set yet. It will set while cooling down. Turn the oven off and leave the oven door ajar to let the cake cool down slowly. Refrigerate overnight covered with plastic wrap. The cake is best served chilled overnight.
The next day release the spring form and gently remove the parchment paper around the cake. I do not recommend removing the cake from the bottom cake pan base. Move to a serving cake stand, slice and enjoy at breakfast, as a dessert or with tea.
Author's notes: I followed every rule in the book to keep my cheesecake from cracking but tiny little cracks did show up. The cake was light and delicious regardless. I also combined different recipes and techniques and made this recipe my own. Keep in mind ovens vary.
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