2 tablespoons half-and-half
2 teaspoons white sugar, or to taste
1/4 teaspoon pumpkin pie spice
1 cup coffee
1 tablespoon whipped cream topping, or to taste (optional)
Mix half-and-half, sugar, and pumpkin pie spice together in a coffee mug. Pour coffee into mug; stir to blend.
Heat in microwave until hot, about 15 seconds. Top with whipped cream.