Could do some substitutions like kiefer- Leftover Mashed Potato Puffs. They’re combined with eggs, sour cream, cheese and chives then baked in a cupcake pan until golden and crusty with creamy middles. They don’t taste like leftovers.
Grilled cheese with gouda, roasted mushroom and onions. Roast mushrooms and onions with olive oil about 20 minutes. Layer shredded gouda on bread, then mushroom/onion mixture, then gouda. Top with bread and fry like grilled cheese.