Prep all ingredients as listed.
Slice the Brie and let it sit at room temperature until softened.
In a bowl, mix the softened butter, minced scallions, minced parsley, Dijon mustard, and grated garlic. Season with salt and black pepper.
In a separate bowl, toss the arugula with lemon juice. Season again with salt and black pepper.
Spread the herb butter mixture inside the sliced baguette.
Layer the baguette with deli ham, Brie cheese, and the seasoned arugula. Top with the other half of the baguette to complete the sandwich.
In a blender, combine the mango, yogurt, milk, cardamom, and sugar. Blend until smooth and creamy. Taste and adjust sweetness as needed.
Serve the jambon beurre alongside carrot sticks, hummus, pickle spears, and mango lassi.