Make the farmers cheese according to note 1, unless using ricotta or cottage cheese.
Make the peach & nectarine butter according to note 2.
Preheat the oven to 175 degrees Celsius.
Line a 20*30 baking pan with parchment paper.
Make the sweet cheese filling by combining all the ingredients in a bowl. Taste to check if more sugar or cinnamon is needed. If using cottage cheese you might want to mix the cheese mixture using a stand mixer.
Combine the dry ingredients in a bowl.
Add eggs, both monk fruit sweeteners and beat using a hand mixer for about 2 minutes to another bowl, until the mixture turns pale and fluffy.
Add the applesauce, yogurt, milk/water and vanilla drops. Mix just until combined.
Add dry ingredients to wet and stir just until combined.
Pour about half of the batter into the lined baking pan. Dollop peach and nectarine butter into the batter, then swirl gently using a knife.
Pour the remaining batter into the baking pan.
Dollop the cheese mixture over the cake batter.
Add sliced peaches and nectarines on top of the cake.
Bake in the middle of the oven for 25-30 minutes.The cake is ready when it is golden brown on the top and an inserted toothpick comes out almost clean.
Let the cake cool completely before slicing it.