4 Tablespoons Unsalted Butter (cold and cut into ½ cubes)
Pinch of Salt
---Muffins---
1¾ Cups All-Purpose Flour
½ Cup Sugar
1 Tablespoon Baking Powder
¼ Teaspoon Salt
5 Tablespoons Unsalted Butter (softened and cut into chunks)
2 Large Eggs
1 Cup Sour Cream or Greek Yogurt
1½ Teaspoons Vanilla Extract
Instructions
Pulse granulated sugar, brown sugar, flour, cinnamon and butter in a food processor until combined. Set aside.
Preheat oven to 375 degrees and place liners in a muffin tin. (Make sure to use liners or the cinnamon filling will stick to the side of the pan)
Using a mixer on medium high speed combine flour, sugar, baking powder, salt and butter until the mixture resembles wet sand. (Alternatively use a food processor)
In a separate bowl whisk together eggs, sour cream/greek yogurt and vanilla until smooth.
Fold the egg mixture into the flour mixture until just combined.
Place one tablespoon of the muffin batter into each prepared tin and then sprinkle a tablespoon of the streusel on top of each. Using the back of a spoon press the filling lightly into the batter.
Top with remaining batter and sprinkle the remaining streusel evenly over the top of each muffin pressing down lightly again.
Bake for 20-25 minutes or until golden brown and a toothpick inserted in the center comes out with only a few crumbs attatched. Cool for 10 minutes before removing the muffins from the muffin tin.
Recipe by Real Cravings at https://www.real-cravings.com/coffee-cake-muffins/