Preheat oven to 350 degrees F / 177 degrees C.
Combine 2 cups almond flour, 4 eggs, ¼ cup butter, ½ tablespoon baking powder, and ½ teaspoon salt in a mixing bowl.
2 cups almond flour, 4 eggs, ½ tablespoon baking powder, ½ teaspoon salt, ¼ cup butter
Mix in ½ cup sour cream and 10 to 12 drops stevia until well combined.
½ cup sour cream, 10 to 12 drops stevia
Grease a cast iron skillet or casserole dish with 1 tablespoon butter or olive oil.
1 tablespoon butter or olive oil
Pour batter into dish and spread evenly.
Bake for 35 minutes or until top is golden brown and a toothpick inserted in center comes out clean.
Let cool for 10 minutes before slicing and serving.