Chicken Caesar Croissant Sandwich (Crisp, Creamy Lunch) - Quickie Recipe

Ingredients

• 3 cups (420 g) cooked shredded chicken, chilled or room temperature
• 1/3 cup (80 ml) mayonnaise
• 1/4 cup (60 g) plain Greek yogurt
• 1/3 cup (35 g) finely grated parmesan cheese
• 1 tablespoon fresh lemon juice
• 1 teaspoon Dijon mustard
• 1 small garlic clove, finely grated
• 1 teaspoon Worcestershire sauce
• 1/2 teaspoon black pepper
• 1/4 teaspoon fine salt, plus more to taste
• 2 cups (90 g) chopped romaine lettuce
• 1/2 cup (25 g) Caesar-style croutons, lightly crushed
• 4 large bakery croissants
• 1 tablespoon unsalted butter, softened, optional for toasting
• 1/4 cup (20 g) parmesan shavings
• Lemon wedges, optional for serving