Preheat the oven to 350 degrees F. Line a baking sheet with parchment paper.
Cut the French bread in half lengthwise. Open it up and place it on the lined baking sheet.
1 large loaf of French bread
In a large mixing bowl add the softened butter and mayonnaise. Mix together with a hand mixer for the best result. (You can do this by hand if your butter is soft enough.
1/2 cup unsalted butter, softened, 1/2 cup mayonnaise
To the mixing bowl, add chopped olives, cheese and green onion. Give everything a really good mix, making sure all the ingredients are coated in the butter-mayo mixture.
6 oz. Kalamata black olives, 6 oz. pimento stuffed green olives, 1 cup shredded Monterey Jack cheese, 1 cup shredded Mozzarella cheese, 3 green onions, finely sliced
Spread half the mixture on one half of the bread and repeat with second half.
Place bread in the oven, uncovered, and bake for 20 minutes or until cheese is bubbling and melted.
Remove from oven and sprinkle with more green onions and parsley.
fresh parsley, minced
Cut bread into slices and serve while warm.