15-Minute Low-Carb Air Fryer Cinnamon Puff Pastry Donuts

Crisp, golden layers shatter into delicate, buttery flakes before melting into a sweet swirl of warm ground cinnamon and caramelized sugar. These air fryer

Equipment

• Air Fryer (Convection Countertop): Circulates high-velocity dry heat to inflate laminated dough layers quickly.
• Dual Biscuit Cutters (3-inch and 1-inch): Punches crisp, defined pastry rings without sealing the outer layered edges.
• Silicone Pastry Brush: Applies thin, uniform coatings of melted fat without bruising the delicate raw dough.
• Stainless Wire Cooling Rack: Allows air to circulate under cooked rings to prevent trapped condensation from softening bases.

Ingredients

• 1 sheet (approx. 120g) low-carb/keto puff pastry sheet (thawed but kept cold; handle minimally)
• 1.5 tbsp unsalted butter, melted (ghee or refined coconut oil works equally well)
• 2.5 tbsp granular monk fruit sweetener (golden or classic varieties)
• 1 tbsp unflavored or vanilla whey protein isolate (ensure ultra-fine sift for dusting)
• 1 tsp ground Ceylon cinnamon
• 1 pinch fine sea salt (sharpens the sweet profile)

Instructions

1. Chill and Prep: Unroll the cold puff pastry onto a lightly floured surface. Using a 3-inch round cutter, stamp out 4 circles, then punch a 1-inch hole out of each center to create uniform rings.
2. Preheat the Unit: Set your air fryer to 375°F (190°C) and let it preheat empty for 3 minutes to guarantee maximum thermal rise upon contact.
3. Air Fry the Rings: Lightly mist the fryer basket with avocado oil spray. Lay the cold rings flat with at least 1 inch of clearance between them; cook at 375°F (190°C) for 7 to 8 minutes until puffed, rigid, and deep amber-brown.
4. Mix the Dusting Blend: While the rings cook, whisk together the granular monk fruit, whey protein isolate, ground cinnamon, and sea salt in a shallow, wide bowl until completely uniform.
5. Coat and Serve: Immediately remove the hot rings, brush each side lightly with melted butter, and dredge thoroughly through the cinnamon-protein mixture until evenly crusted. Rest on a wire rack for 2 minutes before serving.

Nutrition

Calories: 165 kcal · Protein: 12g · Fat: s: 11g Cholesterol: 18mg · Carbohydrates: 8g · Fiber: 4g · Sugar: 0. 5g · Sodium: 140mg