Roasted Rhubarb White Chocolate Muffins

Name: Roasted Rhubarb White Chocolate Muffins
Ingredients: Roasted Rhubarb:; 1 cup of diced rhubarb (from 1 stalk of rhubarb); 1 tablespoon white granulated sugar; Muffins:; 2 1/4 cups all-purpose flour; 1/4 cup brown sugar; 1/4 cup white sugar; 1 teaspoon baking powder; 1/2 teaspoon baking soda; 1 teaspoon salt; 1/3 cup of mini or regular white chocolate chips; 1 cup whole milk; 3 ounces unsalted butter, melted; 1 large egg; 1/2 teaspoon vanilla extract; Honey Butter:; 1/4 cup unsalted butter, at room temperature; 2 teaspoons honey; Pinch of salt