Cinnamon-infused muffins covered in buttery cinnamon crumble, Cinnamon Streusel Muffins are heavenly. These homemade, fluffy muffins taste just like coffee cake. They are perfect with coffee or tea.
Preheat the oven to 375° F. Line a 12-cup muffin tin with liners or grease with cooking spray and set it aside.
To make the streusel, mix the flour, light brown sugar, ground cinnamon, and salt. Add the melted butter and stir until crumbly. Refrigerate until ready to use.
In a medium-sized bowl or large liquid measuring cup, whisk the buttermilk, {lightly beaten} eggs, and vanilla extract until combined.
Whisk the flour, ground cinnamon, sugar, baking powder, and salt together in a large bowl.
Stir the buttermilk-egg mixture and melted butter into the dry ingredients, being careful not to over-mix the batter.
Scoop the batter into the prepared muffin tin, filling each cup a little less than halfway. Sprinkle 1 to 2 teaspoon of streusel into each cup. Cover with remaining muffin batter. Divide the remaining streusel on top of each muffin.
Bake the muffins for 20-25 minutes, or until a toothpick inserted in the center comes out with a few crumbs.
Notes
STORE: Transfer cooled muffins to an airtight container or zip-top bag. Store at room temperature for up to 4 days or in the refrigerator for up to a week.
FREEZE: Transfer cooled muffins to a freezer-safe zip-top bag. Freeze for up to 3 months. Thaw at room temperature before eating.