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Watch this step-by-step guide to achieving the perfect moist crumb and crunchy topping for your coffee cake: Cinnamon Crumb Coffee Cake Recipe Amateur Investigator YouTube• Apr 26, 2026

Mix the brown sugar, flour, and cinnamon. Cut in the cold butter with a fork until the mixture is clumpy and crumbly. Sprinkle it generously over the batter [13, 43]. coffeecake

Bake for 30–35 minutes, or until a toothpick inserted in the center comes out clean [13, 43]. Watch this step-by-step guide to achieving the perfect

In a separate bowl, whisk the egg, sour cream, milk, melted butter, and vanilla until smooth [13, 43]. Bake for 30–35 minutes, or until a toothpick

In a medium bowl, whisk together the flour, sugar, baking soda, and salt [13, 43].

This recipe features a moist, buttery base with a thick, crunchy streusel topping. For the Cake: Flour: 1 ½ cups all-purpose flour [13, 19, 43] Sugar: ½ cup granulated sugar [13, 19, 43] Leavening: ½ tsp baking soda and ½ tsp salt [13, 43]