Green Shrimp and Grilled Bread

Name: Green Shrimp and Grilled Bread
Ingredients: 1 baguette, sliced 1 thick on a diagonal; 5 Tbsp. extra-virgin olive oil, divided, plus more for drizzling; 1½ lb. large shrimp, peeled, deveined; ¾ tsp. Diamond Crystal or ½ tsp. Morton kosher salt, plus more; Freshly ground pepper; 1 bunch cilantro, coarsely chopped (about 2 cups); 8 scallions, coarsely chopped; 1 jalapeño, ribs and seeds removed if desired; 4 garlic cloves; 3 Tbsp. fresh lemon juice; 3 Tbsp. unsalted butter, divided; ¼ cup plain whole-milk yogurt