Start by preheating your oven to 375°F, getting it nice and hot so the croissants bake up golden.
Slice each croissant in half down the middle, careful not to squish 'em all flat.
Brush the melted butter inside each croissant half. This helps them crisp up real nice.
Layer two slices of Swiss cheese and two slices of ham inside every croissant. Don’t be shy, pile it on.
Mix the honey and Dijon mustard together in your small bowl. Then drizzle this sweet tangy combo all over the ham and cheese. It adds that extra yum.
Sprinkle poppy seeds over the tops of your filled croissants. It gives a nice crunch and a bit of nuttiness.
Plop them on a baking sheet and bake for 20 to 25 minutes. You want cheese melted and croissants golden brown. Keep an eye on that float valve if you decide to use a pressure cooker for warming instead—the sealing ring will help keep everything moist.
Notes
Serve warm with a side of fresh fruit for a delightful breakfast or brunch treat.