Ingredients
– 3/4 cup (150 grams) light brown sugar
– 1/3 cup (42 grams) all-purpose flour
– 1 teaspoon ground cinnamon
– 4 tablespoons (57 grams) unsalted butter, melted
– 1 1/2 sticks (170 grams) unsalted butter
– 2 cups (254 grams) all-purpose flour
– 1 teaspoon baking powder
– 1/2 teaspoon baking soda
– 1/2 teaspoon fine sea salt
– 1/4 cup (50 grams) granulated sugar
– 1/2 cup (100 grams) light brown sugar
– 1/4 cup whole milk
– 2 large eggs, at room temperature
– 8 ounces (227 grams) sour cream or plain full-fat yogurt, at room temperature
– 1/2 cup (63 grams) powdered sugar, sifted
– 1 tablespoon milk
Instructions
1-First Step: Preheat and prep pan: Preheat oven to 350ยฐF. Line an 8-inch square metal pan with parchment paper or foil and spray with nonstick cooking spray. Light-colored metal prevents dry edges and ensures even baking.
2-Second Step: Make the streusel: In a small bowl, combine 3/4 cup (150 grams) light brown sugar, 1/3 cup (42 grams) all-purpose flour, 1 teaspoon ground cinnamon, and 4 tablespoons (57 grams) melted unsalted butter using a fork until it resembles wet sand. Set aside for layering.
3-Third Step: Brown the butter: Melt 1 1/2 sticks (170 grams) unsalted butter in a medium stainless steel skillet over medium heat, swirling occasionally. When foamy with crackling, wait until popping stops and brown bits form with nutty aroma, about 2-3 minutes. Remove from heat, pour into a bowl to cool slightly. Watch closely to avoid burning; stainless steel gives even color.
4-Fourth Step: Mix dry ingredients: In a large bowl, stir together 2 cups (254 grams) all-purpose flour, 1 teaspoon baking powder, 1/2 teaspoon baking soda, 1/2 teaspoon fine sea salt, 1/4 cup (50 grams) granulated sugar, and 1/2 cup (100 grams) light brown sugar.
5-Fifth Step: Combine wet ingredients: To the cooled browned butter, add 1/4 cup whole milk, 2 large eggs at room temperature, and 8 ounces (227 grams) sour cream or plain full-fat yogurt at room temperature. Make a well in the dry mixture, pour in wet ingredients, and gently stir until just combined. Avoid overmixing for tender crumb.
6-Sixth Step: Assemble the cake: Spoon half the batter into the prepared pan, sprinkle half the streusel evenly over it, then spread remaining batter and top with rest of streusel.
7-Seventh Step: Bake and cool: Bake for 40 minutes or until a toothpick in the center comes out clean. Cool in pan 15 minutes on a wire rack.
8-Final Step: Add topping and serve: Mix 1/2 cup (63 grams) sifted powdered sugar and 1 tablespoon milk until thick but pourable. Drizzle over warm cake. Cut into squares. Store covered at room temperature up to 4 days.
Last Step:
Please leave a rating and comment letting us know how you liked this recipe! This helps our business to thrive and continue providing free, high-quality recipes for you.Notes
๐ง Monitor the browning butter constantly, as it can go from perfect to burnt quickly; use a light-colored stainless steel pan for the best visual cues on doneness.
๐ Opt for a light metal 8-inch square pan to ensure even baking and prevent dry edges; avoid glass or dark pans which may require adjustments in time and temperature.
๐ฅ Use room temperature sour cream or yogurt to help the batter come together smoothly, ensuring a moist crumb without curdling.
- Prep Time: 20 minutes
- Cooling Time: 15 minutes
- Cook Time: 40 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Nutrition
- Serving Size: 1 square
- Calories: 350
- Sugar: 25 g
- Sodium: 220 mg
- Fat: 18 g
- Saturated Fat: 11 g
- Unsaturated Fat: 7 g
- Trans Fat: 0 g
- Carbohydrates: 42 g
- Fiber: 1 g
- Protein: 5 g
- Cholesterol: 80 mg
