Cinnamon Streusel Coffee Cake

• 1/2 cup all-purpose flour
• 1/2 cup brown sugar
• 2 tbsp cinnamon
• 2 1/2 cups all-purpose flour
• 1 tsp baking soda
• 1 tsp baking powder
• 1/2 tsp salt
• 1 cup unsalted butter, room temperature (2 sticks)
• 1/2 cup sugar
• 1/4 cup brown sugar
• 3 large eggs, room temperature preferred
• 3/4 cup yogurt (vanilla or plain), room temperature preferred
• 1/2 cup milk, room temperature preferred
• 2 tsp vanilla extract
• 3/4 cup brown sugar
• 1 tbsp cinnamon
• 1/4 tsp salt
• 1/2 cup unsalted butter, melted
• 3/4 cup all-purpose flour

Directions