Spicy Steamed Mussels with Garlic Bread

Name: Spicy Steamed Mussels with Garlic Bread
Ingredients: 3 tablespoons plus 1 teaspoon extra-virgin olive oil, divided; 4 slices peasant bread, each about 1 1/2 inches thick (or 1 baguette, sliced in half, lengthwise); 1 whole garlic clove plus 15 cloves garlic, thinly sliced; 4 scallions, thinly sliced on a diagonal; 2 teaspoons salt; 2 pounds Prince Edward Island mussels (or other black mussels); 2 cups tomato puree; 1 cup dry white wine; 2 teaspoons red pepper flakes; 1 handful fresh chive stems (about 40), halved; 1 cup loosely packed fresh basil, thinly sliced; 1/2 cup fresh oregano