Gluten Free Coffee Cake with Cinnamon Streusel

Total time1 hr 25 min

Prep time20 min

Cook time50 min

Gluten Free Coffee Cake with Cinnamon Streusel

This snackable sheet cake bakes up soft and tender, with a rich, buttery crumb thanks to a full stick and a half of butter and a generous cup of sour cream folded into the batter. The real star is that thick layer of cinnamon-brown sugar streusel pressed into coarse, pea-sized crumbs before baking — it turns deep golden and slightly crunchy against the pillowy cake underneath. A simple vanilla glaze gets drizzled over the top while the cake is still warm, soaking into every crevice of the streusel for extra sweetness in each bite. Baked in a 9x13 pan and sliced straight from the dish, it's an easy, crowd-pleasing brunch or coffee-break treat. It's a great pick for a gluten free spread, no special equipment or advanced baking skills required.

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Ingredients

12 servings

For the cake

2 ¼ cups all-purpose flour
King Arthur Baking Company Gluten-Free Measure For Measure Flour Bob’s Red Mill 1 to 1 Baking Flour Pillsbury Best Gluten Free All Purpose Flour Blend - 24 Oz Bob's Red Mill Baking Flour, 1 to 1, Gluten Free King Arthur Gluten Free Measure for Measure Flour
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Chef's tip
Choose a gluten-free baking blend labeled 1:1 or cup-for-cup and use the same amount. Almond and coconut flour won't work the same way.
1 ½ tsp baking powder
½ tsp baking soda
½ tsp fine salt
¾ cup (1 ½ sticks) unsalted butter, softened
1 cup granulated sugar
2 large eggs, room temperature
1 tsp vanilla extract
1 cup full-fat sour cream

For the streusel

1 cup all-purpose flour
Chef's tip
Choose a gluten-free baking blend labeled 1:1 or cup-for-cup and use the same amount. Almond and coconut flour won't work the same way.
¾ cup packed light brown sugar
2 tsp ground cinnamon
¼ tsp fine salt
6 tbsp unsalted butter, melted and slightly cooled

For the glaze

1 cup powdered sugar, sifted
2–3 tbsp milk
½ tsp vanilla extract

Instructions

1
Preheat the oven to 350°F (175°C). Grease a 9x13-inch baking pan with butter or nonstick spray and set aside.
2
Make the streusel: In a medium bowl, whisk together 1 cup flour, the brown sugar, cinnamon, and 1/4 tsp salt until combined. Pour in the melted butter and stir with a fork until the mixture clumps into coarse, pea-sized crumbs. Refrigerate while you prepare the batter.

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