Combine ½ cup of the olive oil, plus all the other dressing ingredients in a food processor or blender, and process for one full minute. Scrape into a small bowl and slowly whisk in the remaining ½ cup olive oil. Adjust seasoning to taste, cover, and set aside in refrigerator.
For the Croutons
Preheat oven to 350 degrees. In a small pan, gently warm the garlic with the olive oil until sizzling, but not smoking. Remove from heat and toss in a bowl with the torn bread pieces. Spread the bread cubes on a baking sheet and bake, stirring occasionally, until lightly browned. Remove and allow to cool.
For the Salad
Add the romaine lettuce into a large mixing bowl with half of the cheese, ⅓ cup of the dressing, and all of the cilantro. Toss to coat thoroughly, arrange in a large platter, and top with the remaining cheese and the croutons.