Step 1 In a large pot of salted, boiling water, cook the pasta to al dente according to the package instructions, about 10 minutes. Drain and set aside.
Step 2 Heat a medium, heavy-bottom pot over medium-high heat until hot. Saute the shallots in the olive oil until lightly colored, then add the heavy cream. Reduce the heat to a gentle simmer and reduce by half, 8 to 10 minutes.
Step 3Whisk in the crumbled cheese until melted and incorporated, then stir in the pasta.
Step 4Remove from heat and reserve the base, still in the pan, in a warm place.