Keto Cinnamon Custard Muffins
There are mornings when I want something sweet with my coffee, but I don’t want to spend the whole morning baking.
That’s exactly how these Keto Cinnamon Custard Muffins came to be.
They’re soft, delicate, lightly sweet, and packed with warm cinnamon flavor. The inside has a lovely custard-like texture that makes these muffins feel much more indulgent than they actually are.
I made these one weekend when I was craving something cozy and cinnamon-scented.
My kitchen was quiet, the coffee was brewing, and I had that familiar feeling of wanting something homemade to go with it.
I didn’t want a complicated recipe.
I wanted something I could mix together quickly, pop into the oven, and enjoy while it was still warm.
These muffins were perfect.
As they baked, the whole kitchen started smelling like cinnamon and vanilla.
When I pulled them from the oven, the tops were lightly golden and the centers were wonderfully soft.
I let them cool just enough to handle, then had one with my coffee.
That first warm bite was everything I was hoping for.
I ended up making another batch later that week because my family kept asking about them.
Now they’re one of those recipes I like to make when I’m craving a little comfort without making a full dessert.
Prep Time: 10 minutes
Cook Time: 20–25 minutes
Total Time: About 35 minutes
Servings: 10–12 muffins
Why You’ll Love These Keto Cinnamon Custard Muffins
- Low-carb and keto-friendly
- Soft and custardy inside
- Warm cinnamon flavor
- Lightly sweet
- Easy one-bowl recipe
- Great with coffee or tea
- Perfect for breakfast or dessert
- Delicious warm or chilled
Ingredients
- 4 large eggs
- ½ cup unsweetened almond milk
- ¼ cup heavy cream
- ⅓ cup granulated keto-friendly sweetener
- 3 tablespoons unsalted butter, melted
- 1 teaspoon vanilla extract
- 1½ teaspoons ground cinnamon
- ¾ cup almond flour
- 2 tablespoons coconut flour
- 1 teaspoon baking powder
- ¼ teaspoon salt
For the Cinnamon Topping
- 1 tablespoon keto-friendly sweetener
- ½ teaspoon cinnamon
- 1 tablespoon chopped pecans, optional
How to Make Keto Cinnamon Custard Muffins
Step 1: Preheat the Oven
Preheat your oven to 175°C (350°F).
Line a 12-cup muffin pan with paper liners or lightly grease the cups.
Silicone muffin cups also work particularly well for these soft muffins.
Step 2: Mix the Wet Ingredients
In a large bowl, whisk together:
- Eggs
- Almond milk
- Heavy cream
- Melted butter
- Sweetener
- Vanilla extract
Whisk until smooth.
Don’t overbeat the mixture—you just want everything combined.
Step 3: Add the Cinnamon
Whisk in the ground cinnamon.
The batter should already smell wonderfully warm and fragrant.
Step 4: Add the Dry Ingredients
Add:
- Almond flour
- Coconut flour
- Baking powder
- Salt
Stir gently until just combined.
The batter will be thinner than a traditional muffin batter.
That’s completely normal.
The eggs and dairy help create that soft custard-like texture.
Step 5: Fill the Muffin Cups
Divide the batter evenly between the muffin cups.
Fill each one about ¾ full.
Sprinkle the cinnamon-sweetener mixture over the tops.
Add chopped pecans if desired.
Step 6: Bake
Bake for approximately 20–25 minutes.
The tops should be lightly golden, and the centers should look set but still have a slight softness.
Avoid overbaking.
That’s the secret to keeping the inside tender.
Step 7: Cool
Remove the pan from the oven.
Let the muffins cool in the pan for approximately 10 minutes.
They will continue to set as they cool.
Transfer them to a wire rack.
You can enjoy them slightly warm or allow them to cool completely.
My Best Tips
Don’t Overbake
These are supposed to have a soft, custardy texture.
If you bake them until they’re very firm, they’ll lose some of that delicate texture.
Use Room-Temperature Eggs
Room-temperature eggs blend more easily with the melted butter and dairy.
Measure Coconut Flour Carefully
Coconut flour absorbs a lot of liquid.
Too much can make the muffins dry.
Let Them Cool
The centers continue to set after the muffins come out of the oven.
Give them a few minutes before deciding they’re underbaked.
Can I Use Coconut Milk?
Yes.
Use unsweetened coconut milk or another unsweetened low-carb milk alternative.
The flavor will be slightly different.
Can I Use Heavy Cream Instead of Almond Milk?
Yes, but the muffins will be richer and more calorie-dense.
You may need to thin the mixture slightly with water if the batter becomes too thick.
What Sweetener Should I Use?
You can use a granulated keto-friendly sweetener such as:
- Erythritol
- Monk fruit blend
- Allulose
- Other granulated low-carb sweeteners
Sweeteners vary in sweetness and texture, so adjust according to the product you’re using.
Delicious Variations
Cinnamon Roll Muffins
Add a little extra cinnamon and top with a simple powdered keto sweetener glaze.
Pecan Cinnamon Muffins
Fold chopped toasted pecans into the batter.
Vanilla Custard Muffins
Reduce the cinnamon and increase the vanilla for a softer flavor.
Chocolate Cinnamon Muffins
Add a tablespoon or two of unsweetened cocoa powder.
Cream Cheese Cinnamon Muffins
Add a small cube of softened cream cheese to the center of each muffin before baking.
Apple-Spiced Flavor
For a keto-friendly option, add a small amount of finely diced apple if it fits your personal carbohydrate target.
How to Serve Keto Cinnamon Custard Muffins
These are delicious with:
- Coffee
- Tea
- Keto hot chocolate
- Unsweetened whipped cream
- Butter
- Cream cheese
- A drizzle of sugar-free syrup
I especially love them slightly warm with a little butter melting over the top.
Are These Really Keto?
The recipe uses almond flour, coconut flour, unsweetened almond milk, eggs, butter, and a keto-friendly sweetener instead of traditional wheat flour and sugar.
However, exact carbohydrate counts depend on the brands and sweeteners used.
If you’re following a strict ketogenic diet, calculate the nutrition using your specific ingredients.
Can I Make These Ahead?
Absolutely.
These muffins are actually lovely after they’ve had time to cool completely.
Make them the night before and store them in the refrigerator.
They make an easy grab-and-go breakfast.
Storage
Because these muffins contain eggs and dairy, store them in an airtight container in the refrigerator.
They should keep well for approximately 3–4 days.
Can I Freeze Them?
Yes.
Allow the muffins to cool completely.
Wrap them individually and place them in a freezer-safe bag or container.
Freeze for up to 2–3 months.
Thaw overnight in the refrigerator.
How to Reheat
Place a muffin in the microwave for approximately 15–25 seconds.
You can also warm them in a low oven for a few minutes.
They’re delicious cold too, especially once the custard texture has fully set.
Nutritional Information
Approximate per muffin, assuming 12 muffins:
- Calories: 155
- Protein: 5g
- Fat: 13g
- Total Carbohydrates: 5g
- Fibre: 2g
- Net Carbohydrates: 3g
Nutrition values are estimates and depend on the specific flour, milk, sweetener, and other ingredients used.
Frequently Asked Questions
Why are my muffins sinking slightly?
A little sinking is normal because these muffins have a soft custard-style center. Cooling them gradually can help minimize it.
Why are the centers still soft?
That’s intentional. They’re supposed to have a tender, custardy texture. They will firm up as they cool.
Can I make mini muffins?
Yes. Reduce the baking time and begin checking them around 10–12 minutes.
Can I use only almond flour?
You can, although the texture will be slightly different. Coconut flour helps absorb some of the liquid and gives the muffins more structure.
Can I make these dairy-free?
Yes. Replace the butter with melted coconut oil or dairy-free butter and use an unsweetened dairy-free milk alternative.
Can I add frosting?
Absolutely. A thin cream cheese frosting made with powdered keto-friendly sweetener would be delicious.
Final Thoughts
These Keto Cinnamon Custard Muffins are one of those little recipes that make an ordinary morning feel special.
They’re not overly sweet.
They’re not heavy.
They’re just soft, warm, creamy, and full of that comforting cinnamon-and-vanilla flavor.
I love making them on slow weekends when I have time to sit down with a cup of coffee and enjoy something homemade.
And if you’ve ever had a craving for cinnamon rolls while trying to keep things low-carb, these muffins can hit that cozy spot without all the work.
Make a batch, let the kitchen fill with that beautiful cinnamon aroma, and enjoy one while it’s still slightly warm.
Sometimes a simple muffin and a hot cup of coffee are all you need for a really good morning. ☕️🤎🧁