1. Preheat Your Oven: Start by preheating your oven to 375 F (190 C). This ensures the oven is at the right temperature for quick toasting, giving your bread bowls a lovely golden-brown finish.

2. Prepare the Sourdough Loaf: Place your sourdough loaf on a clean cutting board. Using a sharp, serrated knife, carefully cut a circular or oval lid from the top of the bread, about 1/2 to 3/4 inch thick. Set this lid aside.

3. Hollow Out the Bread: With your hands or a spoon, gently hollow out the inside of the bread loaf, leaving a sturdy wall about 1/2 to 3/4 inch thick around the edges and at the bottom. Be careful not to tear through the crust. You want enough bread removed to hold a good portion of soup, but enough left to maintain its structure. Save the removed bread pieces; they are perfect for dipping!

4. Prepare the Flavoring (Optional): In a small bowl, whisk together the olive oil, minced garlic, dried oregano, and red pepper flakes, if using. This mixture will add a wonderful aromatic layer to your bread bowls.

5. Brush and Toast: Lightly brush the inside of the hollowed-out bread bowl and both sides of the bread lid with the olive oil mixture. Place the bread bowl and lid directly on a baking sheet. Bake for 10-15 minutes, or until the edges are lightly golden brown and the inside is slightly toasted. This step is crucial for preventing the bread from getting soggy too quickly once filled with soup.

6. Fill and Serve: Once toasted, carefully remove the bread bowl and lid from the oven. Immediately fill the warm bread bowl with your favorite hot soup. Garnish with fresh chopped parsley, if desired, and serve right away with the toasted bread lid on top or alongside for dipping.