1. Stir together first 3 ingredients. Snap off and discard tough ends of asparagus; cut into 1-inch pieces.
2. Bring 5 qt. of salted water to a boil; add tortellini, and cook 6 minutes or just until tender. (Pasta should still be firm to bite.) Drain; rinse with cold water, and drain well again. Place in a serving bowl.
3. Sauté garlic in hot oil over medium-high heat 1 minute or until garlic is lightly browned. Stir in mushrooms, asparagus, and salt; sauté 3 to 5 minutes or until asparagus is crisp-tender. Reduce heat to medium, and stir in Alfredo sauce mixture. Cook 5 minutes or until thoroughly heated.
4. Pour sauce mixture over cooked tortellini; toss gently. Sprinkle with tomatoes and Parmesan cheese. Serve immediately.
Note: For testing purposes only, we used Buitoni Light Refrigerated Alfredo Sauce and Buitoni Three Cheese Tortellini.