My 20-minute crumb cake, on the table in no time!

That’s fantastic! A Crumb Cake (or Streuselkuchen) that takes only 20 minutes of prep time is the ultimate baker’s win—maximum comfort with minimum fuss. The key is assembling it quickly and letting the oven do the heavy lifting!

Here is a quick and delicious recipe for a classic Cinnamon Crumb Coffee Cake that fits your 20-minute prep window perfectly.

🍰 20-Minute Prep Cinnamon Crumb Cake

This recipe makes a soft, moist cake base topped with a thick, buttery streusel.

📋 Ingredients

I. The Crumb Topping (Streusel)

Ingredient	Quantity	Notes
Flour (All-purpose)	$1 \text{ cup}$
Brown Sugar (packed)	$1/2 \text{ cup}$
Cinnamon	$1 \text{ teaspoon}$
Salt	$1/4 \text{ teaspoon}$
Cold Butter (cubed)	$1/2 \text{ cup}$ ($115 \text{ g}$)	Must be cold!

II. The Cake Batter

Ingredient	Quantity	Notes
Flour (All-purpose)	$1 \text{ 1/2 cups}$
Granulated Sugar	$3/4 \text{ cup}$
Baking Powder	$2 \text{ teaspoons}$
Salt	$1/2 \text{ teaspoon}$
Egg	1 large
Milk	$1/2 \text{ cup}$
Vegetable Oil (or melted butter)	$1/4 \text{ cup}$
Vanilla Extract	$1 \text{ teaspoon}$

🛠️ Instructions (Maximum 20-Minute Prep)

I. Prepare the Crumb Topping (5 minutes)

1. Combine Dry: In a medium bowl, whisk together the flour, brown sugar, cinnamon, and salt for the topping.
2. Cut in Butter: Add the cold, cubed butter. Use your fingertips (or a pastry blender) to quickly rub the butter into the dry ingredients until large, coarse crumbs form. Do not fully combine; keep them crumbly! Set aside.

II. Prepare the Cake Batter (5 minutes)

1. Preheat & Prep: Preheat your oven to $375^\circ\text{F}$ ($190^\circ\text{C}$). Grease and flour an $8 \times 8 \text{ inch}$ square baking pan.
2. Combine Dry: In a large bowl, whisk together the flour, granulated sugar, baking powder, and salt.
3. Combine Wet: In a separate small bowl, whisk together the egg, milk, oil, and vanilla extract.
4. Mix: Pour the wet ingredients into the dry ingredients. Mix with a spoon or whisk just until the batter comes together and is smooth. Do not overmix.

III. Assemble and Bake (5 minutes assembly)

1. Pour: Pour the cake batter into the prepared baking pan, spreading it evenly.
2. Top: Scatter the prepared crumb topping generously and evenly over the batter.
3. Bake: Bake for $25 \text{ to } 30 \text{ minutes}$, or until a toothpick inserted into the center of the cake (avoiding the topping) comes out clean.

IV. Finish

1. Cool: Let the cake cool slightly in the pan before slicing.
2. Serve: Dust with a light layer of powdered sugar before serving warm.

Enjoy your speedy, delicious crumb cake!