Keto Cinnamon Donut Muffins Recipe

I created sugar-free keto cinnamon donut muffins that taste just like the real thing, and the secret behind them will make you keep scrolling.

I am obsessed with these Keto Cinnamon Donut Muffins because they trick my brain into thinking I’m eating a bakery snack. I love the way blanched almond flour creates a tender, slightly nutty crumb that actually satisfies.

I adore the punch of ground cinnamon rolled in sugar-free sweetness that hits like a classic breakfast puff. But the best part is that they deliver that doughy, pillowy bite without any sugar drama.

I reach for them on rushed mornings, lazy brunches, or when I want something indulgent but low-carb. Pure guilty-pleasure vibes.

Zero compromise. I mean it, absolutely no compromises here.

Ingredients

• Blanched almond flour: nutty base, gives moistness and a little protein so it’s filling.
• Coconut flour: super absorbent, adds light crumb; you might need a bit more.
• Granular erythritol: sweetens without carbs, can be cooling on the tongue.
• Extra coating sweetener: gives a crunchy, sugary-like exterior you’ll love biting into.
• Ground cinnamon: comforting warmth, smells like fall and makes them cozy.
• Extra cinnamon for coating: punchy spice on the outside, hits right away.
• Baking powder: lifts the muffins so they’re not dense and heavy.
• Fine sea salt: balances sweetness and brings out the other flavors.
• Eggs: binder and structure, makes them cakey and adds protein.
• Sour cream or Greek yogurt: tangy richness, keeps the crumb tender and moist.
• Melted butter in batter: buttery flavor and silkier mouthfeel, worth it.
• Heavy cream or almond milk: thins batter slightly, if it feels too thick.
• Melted butter for brushing: optional but it helps the coating stick and crisp.

Ingredient Quantities

• 2 cups blanched almond flour, lightly packed
• 1/4 cup coconut flour, packed, you might need a tad more if batter seems thin
• 1/2 cup granular erythritol (or preferred keto sweetener), plus 1/4 cup extra for coating
• 2 teaspoons ground cinnamon, plus 1 tablespoon extra for coating
• 1 teaspoon baking powder
• 1/4 teaspoon fine sea salt
• 4 large eggs, room temperature
• 1/2 cup full fat sour cream or Greek yogurt, room temp
• 1/2 cup melted butter (about 8 tablespoons), cooled slightly
• 1 teaspoon vanilla extract
• 2 tablespoons heavy cream or unsweetened almond milk, optional for thinning batter
• 2 tablespoons melted butter for brushing the muffins before coating (optional but recommended)

How to Make this

1. Preheat oven to 350°F (175°C) and line a 12 cup muffin tin with paper liners or grease well so the muffins pop out easy.

2. In a large bowl whisk together 2 cups blanched almond flour, 1/4 cup coconut flour, 1/2 cup granular erythritol, 2 teaspoons ground cinnamon, 1 teaspoon baking powder and 1/4 teaspoon fine sea salt until no lumps remain.

3. In a separate bowl beat 4 large room temp eggs, then stir in 1/2 cup full fat sour cream (or Greek yogurt), 1/2 cup melted butter cooled slightly, 1 teaspoon vanilla extract and 2 tablespoons heavy cream or unsweetened almond milk if the batter looks thick; the batter should be scoopable but not soupy.

4. Pour wet into dry and fold gently until just combined; if batter seems too thin add a tablespoon more coconut flour, a little at a time, until it holds shape.

5. Divide batter evenly among the 12 muffin cups, filling about 3/4 full, and bake 18 to 22 minutes until tops are lightly golden and a toothpick comes out mostly clean with a few moist crumbs.

6. While muffins bake, mix coating: combine 1/4 cup extra granular erythritol with 1 tablespoon extra ground cinnamon in a shallow bowl and set aside.

7. As soon as muffins come out brush each warm muffin with about 2 tablespoons melted butter (this is optional but do it, it makes them authentic) then immediately roll or dip them in the cinnamon sugar mix so it sticks; you can also brush again and double coat for extra sweetness.

8. Let muffins cool a few minutes in the pan then transfer to a wire rack to finish cooling; they taste best slightly warm but hold together better once cooled a bit.

9. Store leftovers in an airtight container in the fridge for up to 5 days or freeze individually wrapped for up to 3 months; reheat in toaster oven or microwave briefly and re-coat with a little butter if needed.

10. Tips: use room temperature eggs and sour cream for a smoother batter, don’t overmix to keep them tender, and if your sweetener is granular and crunchy pulse it in a blender for a finer coating that feels more like classic donut sugar.

Equipment Needed

1. Oven (preheated to 350°F / 175°C)
2. 12-cup muffin tin (lined with paper liners or well greased)
3. 2 mixing bowls (one large for dry, one medium for wet)
4. Whisk and rubber spatula (whisk for dry, spatula for folding)
5. Measuring cups and spoons (for flours, sweetener, spices, liquids)
6. Hand mixer or sturdy whisk/wooden spoon (to beat eggs and combine)
7. Meltproof bowl or small saucepan (to melt and cool butter)
8. Pastry brush (for brushing melted butter on warm muffins)
9. Shallow bowl or small plate (for cinnamon sugar coating)
10. Wire cooling rack and toothpick (to test doneness and cool muffins)

FAQ

Keto Cinnamon Donut Muffins Recipe Substitutions and Variations

• Almond flour: swap for blanched sunflower seed flour at a 1:1 ratio, but be warned it can turn the batter slightly green when mixed with baking soda in some recipes, so add a little extra cinnamon or cocoa to hide it.
• Coconut flour: use an extra 1/3 to 1/2 cup more almond flour instead, since coconut flour soaks up lots of liquid. If you do that, add an extra egg or 1 to 2 tablespoons of heavy cream so muffins don’t come out dry.
• Granular erythritol: replace with allulose at 1:1 for less of that cooling aftertaste, or use monk fruit blend at 1:1 if you prefer no cooling. Note xylitol is sweet but toxic to dogs so don’t use it if pets are around.
• Melted butter: swap with melted coconut oil or ghee 1:1. Coconut oil gives a slight coconut note, ghee gives a richer, nuttier flavor and is great if you want dairy free.

Pro Tips

1. Let the eggs and sour cream actually come to room temp before you mix them, it makes the batter smoother and keeps the muffins from being dense. If you forget, warm the eggs in a bowl of warm water for 5 minutes instead of nuking them.

2. If batter looks too loose add coconut flour one tablespoon at a time until it holds shape; coconut flour soaks up moisture fast so go slow or they’ll turn dry. Also, fold gently and stop when mostly combined so they stay tender, overmixing = chewy muffins.

3. For that authentic cinnamon sugar coating pulse the crystalline sweetener in a mini food processor or blender for a few seconds so it feels less crunchy. Brush warm muffins with a little melted butter, roll once, then brush and roll again for a double coat that really sticks.

4. Cool a few minutes in the tin before moving to a rack so they keep their shape, and store in the fridge if your kitchen is warm. Reheat briefly and re-coat with a touch of butter if the coating loosens after chilling.