Preheat oven to 350 degrees
Slice the baguette into 1/4 inch slices
Brush each side of each slice of bread with butter
Bake until golden brown, turning as needed
Mix mayonnaise, parmesan cheese, artichoke hearts, green chilis, garlic, cornichon, and lemon zest together (save some lemon zest for garnish, if desired)
Top each slice of browned bread with mixture above
Bake until heated through, about 5 minutes
Garnish with remaining lemon zest and chopped parsley, if desired