In a large saucepan, cook tortellini according to package directions.
In a large nonstick skillet over medium heat, melt butter. Stir in flour until smooth; gradually add milk and cream. Bring to a boil; cook and stir for 1 minute or until thickened.
Add the ham, peas, basil, garlic powder, and pepper; cook and stir until cream cheese is melted. Mix in grated cheese. Drain tortellini; add to pan and heat through.
