In a bowl, combine cream cheese, chives, parsley, tarragon, paprika, salt, and pepper.

Add a spoonful of milk or water if needed to achieve a spreadable consistency.

Melt butter.

Brush each sheet of phyllo dough with melted butter and layer them.

Spread half of the cream cheese mixture on the right half of the phyllo rectangle.

Layer half of the brie slices on top of the cream cheese.

Sprinkle half of the diced onions over the brie.

Add smoked salmon slices, overlapping if necessary, and season with salt and pepper.

Top the salmon with the remaining cream cheese, onions, and brie.

Fold the empty half of the phyllo over to create a package, sealing the edges tightly.

Brush the top of the phyllo package with melted butter.

Bake in a preheated oven at 400 degrees Fahrenheit for 7-8 minutes.

Bake until the outside is golden brown and flaky.

Cool slightly before slicing.

Slice into squares and serve.