Spinach-Artichoke Dip Grilled Cheese

In a large skillet over medium heat, heat oil. Add garlic and cook until fragrant, 1 minute, then add spinach and cook until wilted, 3 minutes more. Add spinach to a medium bowl with artichoke hearts, gruyere, and cream cheese. Season with salt and pepper and stir until combined. Add 1 tablespoon butter to skillet and let melt. Butter bread and add two slices to skillet, then top with spinach-artichoke mixture and remaining slices of bread. Cook until nicely golden and cheese is melty, 2 to 3 minutes, then flip and cook 2 minutes more. Serve hot.