Add mushrooms, bowtie pasta, garlic, salt, pepper, water and olive oil to a large sauce pan. Bring to a boil over high heat. Cook pasta, stirring constantly, for about 5 to 6 minutes and then add asparagus.Cook for another 3 to 4 minutes and then add butter and heavy cream. Lower heat to low, mix thorough and continue cooking until pasta is al dente, another 2 to 3 minutes. Season with salt and pepper to taste if necessary.Recipe inspired by Martha Stewart's One-Pot Penne Pasta.