Basic Mug Sponge Cake with Almond and Coconut Flour

  • Prep Time
    5 minutes
  • Cook Time
    2-3 minutes
  • Serving
  • Ready In
    8 minutes

This “Basic Mug Sponge Cake with Almond and Coconut Flour” is the one of the easiest to bake sponge cakes.  You don’t have to have cooking talent for it.  Just follow these few simple steps in the Directions, and you’ll be done with a delicious base sponge cake.

You can fill it with keto jam or cake cream , and decorate it according to your imagination.  It’s done quickly and you can dazzle anyone with it. Even yourself, and because it’s small, you don’t have to be afraid of guilt if you eat everything to the last bite because all ingredients are keto accepted, low-carb and gluten-free ingredients.

Basic Mug Sponge Cake with Almond and Coconut Flour

How many ways can this Basic Sponge Cake be used?

You can use this basic dough in several ways.

If you bake it with sweetener, you can make desserts with it, even cakes, cookies. Cut the sponge cake into small cubes or grind it into crumbs, and you can use this basic sponge cake as dumplings filling inside and as breadcrumbs outside.

If you omit the sweetener from your sponge cake, you can use it in other non-dessert foods as a bread substitute, it will only contain much less carbs than bread.

Read on, here are some ideas with photos and recipes how to use it:

1. Sweetened Basic Mug Sponge Cake as desserts

You can cut the sponge cake to slices and fill layers with cake-fillings for a mini cake, as for the following desserts:

Mini Cottage Chees Blueberry Cake

The essence of the keto diet, as we know, is low carbohydrate content and high fat content. This is also true for keto desserts and cakes. That’s why we make not only sponge cakes with a low carb content, but also filling creams. That’s why I’m going to make slightly different, but much healthier, low-carb cake-fillings with mascarpone, whipped cream, cottage cheese, and gelatin instead of the sugary, pudding creams I’ve been using so far.

Desserts can also be fortified with fruits, make your dessert more colorful, tasty and fiber rich.  Although most fruits are too high in carbs to include on a ketogenic diet, berries are an exception. The berries fit perfectly into the creamy fillings and the decoration is also very simple and eye-catching with them.  Berries are low in carbs and high in fiber. Concretely, blackberries and raspberries contain as much fiber is digestible carbs. In addition, berries are loaded full of antioxidants which include vitamins A, C and E, that are so beneficial.

Strawberry Cottage Chees Mug Cake

Strawberry Choco Mug Sponge Cake

If you add a little cocoa powder into the dough mass before microwaveing, you’ll get a chocolate sponge cake, which is also a wonderful base of many delicious keto and paleo cakes.

Don’t you feel like baking a cake after seeing so many amazing ideas?  You need just a few ingredients and almost only a few minutes to bake a cake base.  For the big finale you only need a little imagination to decorate your master piece.

Use this Basic Mug Sponge Cake diced or as crumbs

As I mentioned, you can make Basic Mug Sponge Cake in both sweet and non-sweet versions and ground both can be used to make different sweet or non-sweet dishes.

II. Sweetened Basic Mug Sponge Cake as Bread Crumbs

The sweet version can also be used diced and as a sweet but sugar- and gluten-free crumb for the following desserts, for example:

The Keto Bread Crumbs (sweetened) or the Sponge Cake Cubes you can also add to Cottage Cheese Dumplings.  These, which are made with a mixture of almonds and coconut flour, makes the cottage cheese dumplings even tastier, low-carb and healthier.

Did you find a recipe that prescribes ground biscuits? No problem, just pick up this Mug of Sponge Cake Basic recipe, throw together a mug or two of sponge cake, cut it into small cubes and grind it when it’s a little dry. It is also perfect instead of ground biscuits.

III. Non-Sweetened Basic Mug Sponge Cake as Bread Crumbs

The non-sweetened Keto Bread Crumbs you can use for more keto foods, such as Breaded Meat or other unsweetened foods. 

Perhaps many people do not know that the recipe for roast meat rolled in breadcrumbs, called the Viennese slice, came from Milan to Vienna, to the imperial city. However, the first description of fried meat has survived in an old Byzantine cookbook. Although the Viennese steak was not born in Vienna, it became the national dish of the Austrians here, and Hungarians started to love it as well during the Monarchy, and even spread all over the world. But why not eat it in a healthy way, with much less carbs and no cooking oil ?!

Breaded Chicken Fingers

I hope you like to try this basic Mug Sponge Cake recipe, as you can use it in a lot of ways, with the residue completely dried and then crushed, you can keep it for months and use it comfortably at any time. I encourage you to bake this recipe and use it as you want.


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Basic Mug Sponge Cake for 4" / 10 cm baking mold


Per Serving: 1 mug with 1 egg dough

  • Daily Value*
  • Calories: 350
    17.5 %
  • Fat: 25 g
    15.4 %
  • Total Carbohydrate: 26 g
    66.1 %
  • Fiber: 4 g
    17.5 %
  • Sugar: 5 g
    12.5 %
  • Net Carbohydrate: 22 g
    55 %
  • Protein: 15 g
    20.4 %
  • Sodium: 364 mg
    15.8 %
  • Percent Daily Values are based on a 2,000-calorie diet. Fat 165 g, Carbohydrate 40g, Fiber 25 g, (Sugar 40 g,) Protein 75 g, Sodium 2300 mg, Potassium 3,500 – 4,700 mg. To calculate the whole net carb content in food, have to subtract the fiber from the total number of carbs. Your individual daily values may be higher or lower depending on your own calorie needs.


For simplicity, I shared  this recipe with an egg. This dose fills a small, 200 ml mug or ramekin. I used two 300 ml ramekins for baking, so I made dough with 3 eggs, i.e., I mixed 3 doses of ingredients, then I divided it into two parts and baked them. If you put several portions in a mug into the microwave, the baking time will increase. I also shared the Nutrition datas for 1 egg dose, to make it easier to calculate.

Basic Mug Sponge Cake with Almond and Coconut Flour

First, put the dry ingredients such as almond flour, coconut flour and baking powder in a bowl and mix.

Basic Mug Sponge Cake with Almond and Coconut Flour

Second, separate the egg yolks and egg whites into a separate bowl. Add the oil, sweetener, water and kefir to the yolks, then mix well to make it almost frothy.


Add the flour mixture to the egg yolk mass and mix well.


Beat the egg whites into a hard foam. A pinch of salt will help make it harder.


Mix the egg whites foam into the egg yolk mass gently.

Basic Mug Sponge Cake with Almond and Coconut Flour

Divide the finished dough mixture into mugs or ramekins.

Basic Mug Sponge Cake with Almond and Coconut Flour

A ramekin, what I used, is can filled with 1-1.5 egg dough mixture. Ramekin's size: Diameter: 4 inches (~ 10cm); Height: 1 1/2 inches (~ 4 cm)


Put a ramekin (or mug) with dough into the microwave for 2-3 minutes. Bake only one mug at a time. Baking time depends on the power of your microwave. Bake the dough until it hardens. It should not be moist and flowing dough. It should be spongy texture like a sponge cake. If necessary, do a needle test. Insert a fork or toothpick into the dough. If the dough still sticks to it, continue to bake. The finished dough can be rolled out of the mold after cooling for a few minutes.


You can use the finished dough in several ways. I hope you can choose from the many options and recipes.

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