1. Preheat your oven to 375°F (190°C).

2. Heat olive oil in a large skillet over medium heat. Add sliced onions and cook until softened, about 2 minutes. Stir in minced garlic and cook for 30 seconds until fragrant.

3. Add shredded chicken, smoked paprika, Worcestershire sauce, and BBQ sauce to the skillet. Stir to combine and cook for 2–3 minutes until heated through. Remove from heat.

4. In a small bowl, combine butter, minced garlic, and parsley. Microwave until melted and stir to mix well.

5. Lay out the 12 slices of bread. Spread the garlic butter evenly on one side of each slice.

6. On the unbuttered side of 6 slices, place 1 slice of Havarti cheese, a portion of the BBQ chicken mixture, and another slice of Havarti. Top with the remaining bread slices, buttered side facing outward.

7. Heat a large non-stick skillet over medium heat. Cook sandwiches for 3–5 minutes until golden brown. Flip, reduce heat to medium-low, and cook another 3–5 minutes until golden and cheese is melted.

8. Remove from skillet, let cool slightly, slice, and serve warm.