Sometimes you just want a warm slice of sweet bread in the morning without taking in extra carbs.
That is why I love making this keto 90 second cinnamon toast bread whenever I need a fast and tasty breakfast.

The bread base cooks right in a mug in the microwave, so you do not have to wait around for an oven to heat up.
Because this recipe is completely low carb and keto friendly, you can enjoy that classic sweet flavor while staying on track with your goals.
A quick turn in a warm skillet gives it a crisp cinnamon crust that makes the whole kitchen smell wonderful.
Why I Love This Recipe
Crispy Caramelized Crust – Pan frying creates a crackly cinnamon crust that delivers the ultimate bakery style crunch without any real sugar.
Lightning Fast Prep – You can mix and cook this warm treat in your microwave in just ninety seconds flat.

Soft and Fluffy Center – Almond flour and egg create a tender, springy bread crumb that never feels dense or dry.
Cures Sweet Cravings – Rich brown keto sweetener and aromatic cinnamon give you authentic comfort food flavor while keeping you in ketosis.
Ingredients You’ll Need
For the Bread
- 1 tbsp Butter
- 3 tbsp Blanched Almond Flour
- 1/2 tsp Baking Powder
- 1 tsp Granulated Keto Sweetener
- 1 pinch Salt
- 1 large Egg
- 1/4 tsp Vanilla Extract
For the Cinnamon Crust
- 1 1/2 tbsp Butter, Softened
- 1 tbsp Brown Keto Sweetener
- 1/2 tsp Ground Cinnamon
How To Make
Step 1
Place the butter in a microwave safe ramekin or wide mug, about 4 inches across, and microwave for 20 seconds until melted. Swirl it around to coat the sides.
Step 2
Add the almond flour, baking powder, granulated sweetener, salt, egg and vanilla to the ramekin. Whisk with a fork until the batter is completely smooth.
Step 3
Microwave on high for 90 seconds, until the bread is set and springy to the touch. Turn it out onto a board, cool for 2 minutes, then slice it in half horizontally into two rounds.
Step 4
In a small bowl, mash the softened butter with the brown sweetener and cinnamon. Spread the mixture over both sides of each bread round.
Step 5
Heat a nonstick skillet over medium heat. Toast the rounds for 1 to 2 minutes per side, until the cinnamon coating is bubbling and caramelized and the edges are crisp.
Step 6
Let the toast rest for 1 minute so the coating sets into a crackly cinnamon sugar crust. Serve warm.

Tips
Choose the Right Dish Shape
I recommend using a flat-bottomed ramekin that is around 4 inches wide rather than a tall coffee mug.
A straight, wide dish gives you a round bread that looks like an English muffin and is easy to cut into two even slices.
If your mug tapers at the bottom, the bread will turn out too tall and narrow, which makes it hard to fry evenly in the skillet.
Adjust for Your Microwave Wattage
Microwaves vary a lot in heat output, and almond flour can turn spongy and dry if it cooks too long.

If your microwave is powerful, I suggest checking the bread around the 70-second mark. The top should feel springy to the touch without any wet batter left in the center.
Whisk the Egg Separately First
From my experience, the biggest mistake with microwave keto bread is ending up with little streaks of cooked egg white inside the crumb.
I find that beating the egg thoroughly with a fork before folding in the almond flour fixes this completely. It keeps the crumb soft and tender without any eggy pockets.
More Recipes
- Keto Brown Butter Pecan Bread
- Keto Cinnamon Roll Cheesecake Bars
- Keto Cinnamon Sugar Donut Holes
- Keto Cottage Cheese Sandwich Bread
- Keto Everything Cream Cheese Bread
FAQ
Can I use coconut flour instead of almond flour?
Yes, but you must reduce the amount since coconut flour absorbs much more liquid than almond flour.
Use only one tablespoon of coconut flour instead of the three tablespoons of almond flour to keep the bread light rather than dense and dry.
Keto 90 Second Cinnamon Toast Bread
Equipment
- ramekin
Ingredients
For the Bread
- 1 tbsp Butter
- 3 tbsp Blanched Almond Flour
- 1/2 tsp Baking Powder
- 1 tsp Granulated Keto Sweetener
- 1 pinch Salt
- 1 large Egg
- 1/4 tsp Vanilla Extract
For the Cinnamon Crust
- 1 1/2 tbsp Butter, Softened
- 1 tbsp Brown Keto Sweetener
- 1/2 tsp Ground Cinnamon
Instructions
- Place the butter in a microwave safe ramekin or wide mug, about 4 inches across, and microwave for 20 seconds until melted. Swirl it around to coat the sides.
- Add the almond flour, baking powder, granulated sweetener, salt, egg and vanilla to the ramekin. Whisk with a fork until the batter is completely smooth.
- Microwave on high for 90 seconds, until the bread is set and springy to the touch. Turn it out onto a board, cool for 2 minutes, then slice it in half horizontally into two rounds.
- In a small bowl, mash the softened butter with the brown sweetener and cinnamon. Spread the mixture over both sides of each bread round.
- Heat a nonstick skillet over medium heat. Toast the rounds for 1 to 2 minutes per side, until the cinnamon coating is bubbling and caramelized and the edges are crisp.
- Let the toast rest for 1 minute so the coating sets into a crackly cinnamon sugar crust. Serve warm.