1( 1 lb.) box Hannaford linguine
1 tablespoon My Essentials unsalted butter
1/4 cup chopped red onion
2 each garlic cloves, chopped
1/2 to 1 teaspoon Crushed red pepper flakes, or to taste
1 medium tomato, chopped
1 teaspoon dijon mustard
1/2 cup white wine or chicken broth
2 lbs fresh mussels, scrubbed and debearded
1/2 cup heavy cream
1 dash freshly ground black pepper, to taste
2 tablespoons Chopped fresh parsley
3 oz crumbled gorgonzola cheese (about 1/2 cup),divided