Jelly Doughnut Muffins Recipe

Name: Jelly Doughnut Muffins Recipe
Ingredients: softened unsalted butter or nonstick cooking spray or 12 baking cups, for greasing or lining the muffin tin; 2 cups all purpose flour; 1 1/2 teaspoons baking powder; 1 teaspoon ground nutmeg; 1 teaspoon ground cinnamon; 1/2 teaspoon salt; 3/4 cup sugar; 1/4 cup canola oil; 1 large egg, at room temperature; 3/4 cup whole milk; 1/4 cup plus 2 tablespoons jam of your choice, for filling; 1/4 cup (4 tablespoons) unsalted butter, for brushing; 1/3 cup sugar; 1 tablespoon ground cinnamon