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You can microwave the liquids till warm or heat them in a pan on the stove. Take care not to boil the liquids. Stir well to melt the cheese. Continue cooking if you want a really thick sauce. If not, remove the sauce and serve.

Summary:
Melt butter and olive oil.Heat the tablespoon of butter and tablespoon of olive oil in a sauté pan over medium heat. Heat the heavy cream and bouillon. Add Parmesan cheese and remove from heat.