Cook pasta according to package directions; drain and keep warm.
Melt butter in a large skillet over medium-high heat; add garlic, and sauté until tender.
Add 1/2 cup bourbon, and cook, stirring constantly, 3 to 5 minutes. Stir in whipping cream and cheese. Cook over low heat, stirring constantly, until cheese melts. Gradually stir in remaining 1/4 cup bourbon; stir in pecans and parsley. Pour over pasta; toss. Serve immediately.