For the filling
8 ounces cream cheese, softened at room temperature for an hour
2 large egg yolks
1/4 cup sugar
1 teaspoon vanilla
1 tablespoon dark rum
3/8 teaspoon nutmeg
1/8 teaspoon cinnamon

For the muffins
1/2 cup unsalted butter, melted and cooled
2 large eggs
1 1/3 cups pureed pumpkin
1 cup light brown sugar
2 tablespoons unsulphured dark molasses
1 3/4 cups all-purpose flour
1 teaspoon baking soda
1/2 teaspoon salt
1 teaspoon ground ginger
1 teaspoon ground cinnamon
1/4 teaspoon ground cloves
Dash of freshly-ground black pepper