1/3 c. butter
1/4 c. flour
3 c. milk
1 c. heavy cream
1 c. Parmesan
1/4 tsp. pepper

Melt butter, then add flour, cook until bubbly, approximately 1 minute, gradually add milk while stirring. Add cream all at once, cook over medium heat stirring well until thickened. Remove from heat and add Parmesan until melted then add pepper. Serve over pasta.