Lemon Blueberry Crumb Cake - Serving Dumplings

Ingredients

• 3 tbsp light brown sugar
• 3 ½ tbsp unsalted butter (at room temperature)
• 6 tbsp all-purpose flour
• 2 cups blueberries (fresh)
• 1 ½ cups all-purpose flour
• ¾ cup unsalted butter (at room temperature (1½ sticks))
• 1 cup sugar
• 2 eggs (at room temperature)
• 2 tsp baking powder
• ¼ tsp salt
• zest from 1 lemon
• juice from ½ lemon
• 2 tbsp milk
• 1 tsp vanilla extract
• powdered sugar (for serving)