Let the sliced brie sit out at room temperature while you prepare everything.
Prep the ingredients per the instructions above.
Add butter, herbs, dijon, and garlic to a bowl. Mix to combine. Season to taste with salt and pepper.
Add arugula to a bowl. Toss with lemon juice. Season with salt and pepper.
Spread butter generously inside the bottom half of the baguette. Layer the ham and brie, and season with salt and pepper. Top with a handful of arugula. Cover with the remaining half of the baguette.
Mix all the ingredients for the lemonade. Serve over ice.
Cut in half and serve with chips, pickle, and homemade lemonade.