Crab Melt

Easy Crab Melts are perfect for entertaining! Sourdough bread is topped with fresh crab, herbs, tomato and Gruyere cheese. Exceptionally delicious!
8 ounces sourdough bread
2 tablespoons olive oil
⅔ cup mayonnaise
½ teaspoon Old Bay seasoning
3 green onions thinly sliced
1 teaspoon minced chives
2 teaspoons minced fresh dill
½ teaspoon Worcestershire sauce
½ tablespoon fresh orange juice
½ teaspoon orange zest
½ teaspoon lemon zest
16 ounces crab meat lump or other pieces work fine
3 Roma tomatoes sliced
6 ounces Gruyere cheese shredded