Jelly Doughnut Muffins

2 tablespoons shortening
1/2 cup granulated sugar
1 egg
2 cups all-purpose flour
3 teaspoons baking powder
1/2 teaspoon salt
1/2 teaspoon cinnamon
1/2 cup milk
1/4 cup jelly
1 cup chopped nuts
Melted butter

Cream shortening and sugar. Add eggs; beat. Add remaining dry ingredients alternately with milk. Spray muffin pans; fill 1/2 full. Place a spoonful of jelly on each, then top with more batter. Brush with butter, then sprinkle nuts and more cinnamon on top. Bake at 400 degrees F for 20 to 25 minutes.