Prepare the Shrimp: Peel the shrimp and remove the dark vein along the back using a small knife. Place the cleaned shrimp in a medium mixing bowl.
Marinate the Shrimp: Pour the soy sauce over the shrimp and toss until evenly coated. Let the shrimp marinate for 20–30 minutes to absorb the savory flavor.
Cut the Baguette: Place the baguette slices on a cutting board and cut them into small, bite-sized cubes. Transfer the bread cubes to a mixing bowl.
Season the Bread Cubes: Drizzle the olive oil over the bread cubes. Add the minced garlic and salt, then toss until the bread cubes are evenly coated with the seasoning.
Toast the Croutons: Heat a large skillet over medium heat. Add the seasoned bread cubes and cook for 5–7 minutes, stirring frequently with a wooden spoon, until golden brown and crispy on all sides. Remove from the heat and set aside.
Grill the Shrimp: Heat a grill pan over medium-high heat. Using tongs, remove the shrimp from the marinade, allowing any excess liquid to drip off. Discard the remaining marinade. Place the shrimp in a single layer on the hot grill pan and cook for 2–3 minutes per side, or until pink, opaque, and cooked through. Remove from the heat and set aside.
Wash and Dry the Lettuce: Rinse the romaine lettuce leaves thoroughly under cold running water. Pat them dry with paper towels to remove excess moisture and prevent the dressing from becoming watery.
Assemble the Salad: Tear the romaine lettuce leaves into large, bite-sized pieces using your hands. Transfer them to a large salad bowl and arrange the grilled shrimp over the lettuce.
Add Fresh Lemon Juice: Squeeze the fresh lemon juice over the shrimp and lettuce to add a bright, tangy flavor.
Add the Caesar Dressing: Drizzle the Caesar dressing over the salad. Using two large spoons, gently toss until the lettuce and shrimp are evenly coated.
Sprinkle with Parmesan: Grate the Parmesan cheese over the dressed salad, distributing it evenly across the lettuce and shrimp.
Finish with Croutons: Add the crispy homemade garlic croutons to the salad. Gently toss everything together to combine, then serve immediately while the shrimp are warm and the croutons are still crunchy.