Wash the mussels under fresh water, shuck them and leave the fruit on the half shell.
In a bowl, add your ingredients and mix well until the oil has been fully absorbed by the bread crumbs. The bread will look uniformly wet.
Add salt and pepper as desired.
Place all the open mussels in a baking sheet and with a teaspoon put the breadcrumbs in each mussel until the mussel is completely covered.
Bake at 500F for 5-7 minutes, then put under the broiler for 1 minute to brown.