In a large mixing bowl, whisk together dry ingredients.
In a separate bowl, mix wet ingredients.
Combine wet and dry ingredients and stir to incorporate.
Pour into a greased 9 x 13-inch baking pan.
Bake at 350°F for 40 minutes, or until a toothpick comes out clean.
While the cake bakes, beat frosting ingredients until smooth. Add milk as needed to reach your desired consistency.
Cool the cake completely before frosting. If the frosting is too tart, sprinkle with a little extra sugar substitute just before serving. Refrigerate for up to 5 days—if it lasts that long!
Nutrition Facts
225 calories | 15g protein | 10g fat | 29g carbs (17g net carbs, 3g fiber)