Cook tortellini according to package directions. Meanwhile, in a large skillet, heat butter and oil over medium-high heat. Add asparagus; cook and stir 3-4 minutes or until crisp-tender. Add garlic and pepper; cook 1 minute longer.
Remove from heat; stir in herbs, lemon zest and lemon juice. Drain tortellini; transfer to a large bowl. Stir in cheeses and asparagus mixture.
