Strawberry Crumb Cake

Ingredients

• 3/4 cup (96g) all purpose flour
• 1/3 cup (66g) granulated sugar
• 2 tablespoons (25g) packed brown sugar
• 1/8 teaspoon fine sea salt
• 4 1/2 tablespoons (64g) cold, unsalted butter, cubed
• 1 1/4 cups (160g) all purpose flour, sifted
• 1 1/2 teaspoons baking powder
• 3/8 teaspoon fine sea salt
• 6 tablespoons (85g) unsalted butter, softened
• 3/4 cup (150g) granulated sugar
• 1 large egg
• 1 large egg yolk
• 1 1/2 teaspoons pure vanilla extract
• 1/3 cup (78ml) whole milk
• 1/4 cup (57g) sour cream
• 1 cup (142g) chopped strawberries ((1/2-inch pieces))
• fresh strawberries for garnish (optional)
• 3/4 cup (90g) powdered sugar, sifted
• 2 tablespoons puréed strawberries
• 1 tablespoon half and half