Coconut Flour Cake

Name: Coconut Flour Cake
Prep time: 15 min
Cook time: 20 min
Total time: 35 min
Cuisine: American
Ingredients: 1 tablespoon butter (unsalted, for pan); 4 large eggs; 1 cup coconut milk (canned, unsweetened, full fat); 1 ½ teaspoon stevia glycerite (equals ½ cup of sugar); 1 tablespoon vanilla extract (or 1 teaspoon of coconut extract); 3/4 cup coconut flour (84 grams); 1/4 teaspoon Diamond Crystal kosher salt; 1 tablespoon baking powder (gluten-free if needed); 1 teaspoon powdered sweetener (optional, for garnish)