Ingredients
Equipment
Method
- Begin by preheating your oven to 375°F (190°C). Line a standard 12-cup muffin tin with paper liners or grease it thoroughly with cooking spray or butter. This ensures your muffins won't stick and will pop out easily.
- In a large mixing bowl, whisk together the all-purpose flour, protein powder, granulated sugar, baking powder, salt, ground cinnamon, and ground nutmeg. Ensure everything is well combined to distribute the leavening agents and spices evenly.1.5 cups all-purpose flour, 0.5 cup protein powder, 0.33 cup granulated sugar, 2 teaspoons baking powder, 0.5 teaspoon salt, 1 teaspoon ground cinnamon, 0.25 teaspoon ground nutmeg
- In a separate medium bowl, whisk together the milk, melted butter (or coconut oil), eggs, and vanilla extract until smooth and fully incorporated.1 cup milk, 0.25 cup unsalted butter, melted, 2 large eggs, 1 teaspoon vanilla extract
- Pour the wet ingredients into the bowl with the dry ingredients. Gently whisk 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 softened butter (or coconut oil spread), brown sugar, and cinnamon. Mix with a fork until it forms a crumbly paste.2 tablespoons softened unsalted butter, 2 tablespoons brown sugar, 1 teaspoon ground cinnamon
- Fill each muffin cup about two-thirds full with the muffin batter. Next, dollop a teaspoon of the cinnamon swirl mixture onto the batter in each muffin cup.
- Using a toothpick or the tip of a small knife, gently swirl the cinnamon mixture into the batter. Insert the toothpick into the batter and make a few figure-eight or circular motions, being careful not to over-swirl which can muddy the pattern. The goal is to create a marbled effect.
- 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. The tops should be golden brown and slightly puffed.
- Once baked, remove the muffins from the oven and let them cool in the muffin tin for about 5-10 minutes before transferring them to a wire rack to cool completely. This allows them to set properly.
Notes
These muffins can be stored at room temperature in an airtight container for up to 2 days. For longer storage, refrigerate them for up to 5 days or freeze for up to 3 months.
