Blueberry-Rhubarb Muffins with Streusel Topping

Name: Blueberry-Rhubarb Muffins with Streusel Topping
Prep time: 15 min
Cook time: 15 min
Total time: 30 min
Cuisine: American
Ingredients: 1/2 cup light brown sugar (lightly packed); 1/4 cup white granulated sugar; 1/2 cup unsalted butter (softened); 2 eggs; 3/4 cup plain Greek yogurt; 1 teaspoon vanilla extract; 2 cup all-purpose flour; 1 1/4 teaspoon baking powder; 1 1/4 teaspoon baking soda; 1/2 teaspoon kosher salt; 1 cup blueberries (fresh or frozen); 1 cup rhubarb (diced); 1/4 cup salted butter (melted); 1/4 cup dark brown sugar (lightly packed); 2 tablespoons white sugar; 2/3 cup all-purpose flour; 1 teaspoon cinnamon