Cinnamon walnut muffins are made from scratch with simple ingredients and turn out soft, tender, and filled with warm cinnamon flavor. They make the perfect treat paired with a warm mug of coffee or tea.
Preheat oven to 350F and line a muffin pan with liners, or grease thoroughly, and set aside.
In a large bowl, whisk together flour, cinnamon, baking powder, and salt.
Make a well in the center of the dry ingredients and add your wet ingredients: sugar, melted butter, eggs, milk, and vanilla. Stir until just combined, then add the walnuts, stirring to incorporate.
Distribute batter between 12 muffin cups.
In a small bowl, combine granulated sugar and cinnamon for the topping. Sprinkle evenly over the muffins.
Bake for about 18-22 minutes, or until the top of your muffins pop back when pressed down gently (or once they reach 195-200F in the center).
Allow pan to cool for 2-3 minutes before removing muffins to a cooling rack to cool completely. Store cooled muffins in a sealed container.
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Notes
Storage: Muffins will keep at room temperature in a sealed container for 3 days.
Freezing: Baked muffins can be stored in the freezer for up to 3 months in a freezer-safe container.
Muffins sticking to liners?: If using paper liners, allow your muffins to cool completely before unwrapping or they will stick to the papers.
To prevent dry muffins: Take care to measure your flour properly (either by weight or using the spoon and level method), do not reduce/omit any liquids, and watch carefully not to overbake your muffins. These are the three most common reasons for dry muffins.