Heat olive oil in a frying pan over medium heat.

Add chopped onion (or frozen onion cubes). Sauté until soft and fragrant.

Add garlic (frozen cube or fresh) and stir for about one minute.

Add the chopped pastrami strips and sauté for about three minutes, stirring continuously, until the meat is heated through, slightly crisp in spots, and well combined with the onions and garlic.

Remove from heat and let it cool slightly.

Preheat oven to 375 degrees Fahrenheit. Line a baking sheet with Gefen Parchment Paper.

Place the defrosted puff pastry sheet flat on the baking sheet. Spread a thin layer of garlic mayo evenly over the pastry.

Spread the pastrami mixture evenly over the puff pastry sheet.

Starting from one side, roll it up jelly-roll style. Place the seam side down on the baking sheet.

Brush the top with duck sauce.

Sprinkle with “Everything but the Bagel” seasoning or sesame seeds. OR for a Chanukah-inspired look, use Chanukah-shaped cookie cutters to cut out shapes from additional pastry dough. Place the shaped dough onto the deli roll log, and sprinkle only the shapes with sesame seeds/poppy seeds/everything seasoning.

Bake for 20–30 minutes, until golden, puffed, and cooked through. Keep an eye on it so it doesn’t burn.

Slice into thick pieces and enjoy warm!