Prepare pasta according to package directions. Drain and set aside.
In a large skillet, melt butter over medium heat. Add garlic and sauté for 1-2 minutes.
Whisk in the creamer and bring to a boil, stirring frequently.
Reduce heat to low and mix in the Parmesan cheese. When the cheese has melted in to the sauce, stir in the pesto and allow to simmer 3-5 minutes. Season to taste with salt and pepper.
Fold in the tortellini and serve warm.