Preheat your oven to 350°F (175°C). Line a muffin tin with paper liners or lightly grease it.
In a large mixing bowl, combine the spice cake mix, pumpkin puree, and eggs. Stir until the ingredients are just combined. Remember, it's okay if the batter is a little lumpy.
Divide the batter evenly among the prepared muffin cups, filling each about two-thirds full.
Bake in the preheated oven for about 20-25 minutes, or until a toothpick inserted into the center of a muffin comes out clean.
Let the muffins cool in the tin for 5 minutes, then transfer them to a wire rack to cool completely.
Enjoy your Pumpkin Spice Cake Mix Muffins warm, with a pat of butter or a dollop of cream cheese frosting, if desired.
