In a mixing bowl, blend softened butter and vanilla bean paste until it's light and fluffy. Use a hand mixer or a stand mixer for that extra fluffiness.

Gradually add powdered sugar to the butter mixture. Start slow to avoid a sugary explosion, then crank up the speed until it's all beautifully combined.

Pour in the heavy cream, and keep mixing until your frosting reaches a smooth and creamy consistency.

Sprinkle in the pumpkin pie spice and ground cinnamon. Mix it up until the spices are all cozy with the frosting, giving it that warm, inviting color.

That's it! Your cinnamon frosting is ready to spread joy on cupcakes, cakes, or whatever sweet masterpiece you've got going.