Broccoli-Parmesan Soup with Grilled Cheese Croutons

Name: Broccoli-Parmesan Soup with Grilled Cheese Croutons
Cook time: 25 min
Total time: 25 min
Cuisine: American
Ingredients: 3 Tbsp. extra-virgin olive oil; 2 tsp. chopped garlic (from 2 garlic cloves); 0.25 cup all-purpose flour; 2 cups vegetable broth or chicken broth; 2 cups whole milk; 1 tsp. kosher salt; 0.75 tsp. black pepper, plus more for garnish; 4 cups chopped fresh broccoli florets (12 oz.); 2 Tbsp. salted butter, divided; 2 (1 1/2-oz.) hearty white bread slices (such as Pepperidge Farm Farmhouse); 2 oz. sharp white Cheddar cheese, shredded (about 1/2 cup); 1 oz. Parmesan cheese, grated with a Microplane grater (about 2/3 cup), plus more for garnish; Sliced chives