Ingredients
Equipment
Method
- Begin by preheating your oven to 375°F (190°C). Line a 12-cup muffin tin with paper liners or grease it well. This ensures your muffins won’t stick.
- In a large mixing bowl, whisk together the all-purpose flour (or gluten-free blend), protein powder, granulated sugar (or sweetener), baking powder, and salt. Don't forget to add the 1 teaspoon of ground cinnamon to this dry mixture for an initial layer of cinnamon flavor.1 ½ cups all-purpose flour, ½ cup unflavored or vanilla protein powder, ¾ cup granulated sugar, 2 teaspoons baking powder, ½ teaspoon salt, 1 teaspoon ground cinnamon
- In a separate medium bowl, whisk together the melted butter, eggs, milk, and vanilla extract until well combined.½ cup unsalted butter, 2 large eggs, 1 cup milk, 1 teaspoon vanilla extract
- Pour the wet ingredients into the bowl with the dry ingredients. Stir until just combined. Be careful not to overmix; a few lumps are perfectly fine. Overmixing can lead to tough muffins.
- In a small bowl, combine the packed brown sugar and the remaining 1 tablespoon of ground cinnamon and the 2 tablespoons of softened butter. Mix with a fork until it forms a crumbly paste. This is your delicious cinnamon swirl filling.½ cup packed brown sugar, 2 tablespoons unsalted butter, 1 tablespoon ground cinnamon
- Divide about half of the muffin batter evenly among the prepared muffin cups.
- Spoon about a teaspoon of the cinnamon brown sugar mixture into the center of each muffin, on top of the first layer of batter.
- Carefully spoon the remaining muffin batter over the cinnamon swirl, ensuring it covers the filling and reaches about two-thirds to three-quarters full in each muffin cup.
- Place the muffin tin in the preheated oven and bake for 18-22 minutes, or until a toothpick inserted into the center of a muffin comes out clean.
- Once baked, remove the muffins from the oven and let them cool in the muffin tin for a few minutes before transferring them to a wire rack to cool completely.
Notes
Store in an airtight container at room temperature for up to 2 days. Refrigerate for up to 5 days. Freeze for up to 2-3 months.
Reheat in microwave for 15-30 seconds or in toaster oven/conventional oven at 300°F (150°C) for a few minutes.
