Mix dry ingredients. Add the almond flour, cocoa powder, powdered sweetener, and baking powder to a small mixing bowl and combine well.
¾ cup almond flour, 3 tablespoons cocoa powder, ⅓ cup monk fruit/erythritol sweetener, 1 teaspoon baking soda
Melt the butter and mix in wet ingredients. Add the butter to the microwave safe dish and melt in the microwave for 25-30 seconds. pout the melted butter into the dry mix and add the sour cream, eggs, and vanilla extract, mix thoroughly until combined well.
4 tablespoons butter, ½ teaspoon vanilla extract, 2 tablespoons sour cream, 2 large eggs
Stir in the chocolate chunks. Add the dark chocolate of choice and stir in to combine.
Cook in microwave for 2 ½ to 3 minutes. Cook on high in the microwave starting at 2 ½ minutes. Depending on your microwave and additional 15-30 seconds cook time may be required. Test for doneness with a testing stick or toothpick, if it pulls out clean-ish the brownies are done.
Rest, cool, slice, and serve. Carefully remove the brownies from the microwave, the dish will be very hot! Once cooled, slice the brownies into two bite portions and enjoy!