Mom's Sour Cream Coffee Cake

This classic mom's sour cream coffee cake features a tender, buttery crumb, a rich browned-butter base, and a sweet cinnamon walnut streusel swirl. Perfect for a cozy weekend morning or holiday brunch!

Prep Time 20

Cook Time 50

Cooling time 15

Total Time 1 25

Equipment

9-inch Springform Pan
Small saucepan
large bowl
Kitchen scale

Ingredients

TOPPING AND MIDDLE OF CAKE

▢ 1/2 cup chopped walnuts
▢ 1/4 cup sugar
▢ 1 teaspoon ground cinnamon

Instructions

Brown the Butter Twist

Melt the butter in a small saucepan over medium heat, letting it foam and then quiet down as the milk solids toast. When it smells nutty and you see golden-brown specks, immediately pour it into a bowl so it does not keep darkening.
Chill the browned butter just until it firms back up to a soft, spreadable, room-temperature texture, not rock-hard. This is the sweet spot for creaming, it should press like soft clay under a spoon.

Mix the Batter

Heat the oven to 350 degrees. In a large bowl, cream the softened browned butter and sugar for 3-4 minutes until pale and fluffy, and you can smell that toasted, caramel-like note.
Beat in the eggs, then add the sour cream and vanilla, mixing on medium speed until the batter looks smooth and glossy.
In a second bowl, stir together the flour, baking powder, baking soda, and salt until the mixture looks evenly blended with no streaks.
Add the dry mixture gradually to the creamed mixture, beating after each addition just until the flour disappears. The batter will be thick and plush, like a soft frosting.

Streusel, Layering, and Baking

Stir the walnuts, sugar, and cinnamon together for the topping and middle, then add a small pinch of cardamom for that warm, complex lift if desired.
Butter a 9-inch springform pan, then spread in half the batter, nudging it into the corners so you do not leave air pockets.
Sprinkle half of the cinnamon mixture evenly over the batter to create that signature cinnamon sugar swirl.
Dollop the remaining batter over the cinnamon layer in spoonfuls, then gently coax it together with the back of a spoon or an offset spatula. Take your time to keep the middle layer distinct.
Finish by sprinkling the rest of the cinnamon mixture over the top, then bake for 45-60 minutes (check around 50 minutes), or until a toothpick comes out clean.
Let the cake cool 10-15 minutes before unlatching the springform pan, so the crumb sets and slices stay clean.

Notes

Storage Tip: Store the coffee cake in an airtight container at room temperature. Never refrigerate it, as cold air stales the tender crumb quickly and turns it dry.

Baking Tip: Cream the butter and sugar for the full 3-4 minutes to trap air, which helps the baking powder and baking soda lift the crumb effectively.

Measurement Tip: For a foolproof result, weigh your ingredients with a kitchen scale (aim for about 240g flour and 200g sugar). If using cups, spoon and level the flour rather than scooping directly, to avoid a heavy crumb.

Substitution Tip: Full-fat Greek yogurt is an excellent 1:1 substitute for the full-fat sour cream, maintaining both tang and moisture.

Nutrition information is estimated based on common ingredients and serving sizes and may vary.

Keyword coffee cake, crumb cake, mom's sour cream coffee cake, sour cream

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