Strawberry-Rhubarb Coffee Cake with crumb topping Recipe

Ingredients

• 1 cup diced fresh or frozen rhubarb
• 1 cup diced strawberries
• 2 Tbsp. orange juice
• ¼ cup granulated sugar
• 1 Tbsp. cornstarch
• ¼ cup packed dark brown sugar
• 1 tsp. ground cinnamon
• 1 tsp. minced orange zest
• ½ tsp. kosher salt
• 5 Tbsp. unsalted butter, melted and slightly cooled
• 1 cup all-purpose flour
• 1 ¼ cups all-purpose flour
• 1 tsp. baking powder
• ½ tsp. each baking soda and kosher salt
• 6 Tbsp. unsalted butter, softened
• 1 cup granulated sugar
• 2 eggs
• 2 tsp. orange juice
• 1 tsp. pure vanilla extract
• ½ cup sour cream
• Powdered sugar