Saute mushrooms in olive oil. Remove and set aside. Top with fresh thyme.
Add in shallots or onion and saute until cooked through. Add in tomatoes,and cook until they are opened.
Add in white wine, stirring and cook down for about 3-5 minutes.
Add in butter, and a few sprigs of fresh thyme.
Add in shrimp and cook just until the shrimp is done. Add mushrooms back in.
Add parsley, and more fresh thyme. If you want to add in a splash of cream, now is the time and stir until warmed.
Serve immediately over barley.