Polish-Style Pizza With Mushrooms And Chives (

• 1 (8-9") soft hoagie roll or small Italian loaf, split in half lengthwise
• 1 tablespoon unsalted butter
• 1 small onion, finely chopped
• 8 ounces white or crimini mushrooms, trimmed, finely chopped
• Kosher salt, freshly ground black pepper
• 1/4 cup ketchup
• 1 cup grated part-skim mozzarella
• 2 slices deli ham, torn in half
• Mayonnaise, thinly sliced chives, french fried onions (such as French's), drained canned corn kernels, and/or chopped pickles (for serving)

1. Preheat oven to 375u0b0F; line a rimmed baking sheet with foil. Place bread halves cut side up on sheet.
2. Melt butter in a medium skillet over medium heat. Cook onion, stirring, until translucent, 3-4 minutes. Add mushrooms and lightly season with salt and pepper; cook, stirring occasionally, until liquid is evaporated and mixture cooks down to a spreadable consistency, about 10 minutes more. Let cool.
3. Spread 2 Tbsp. ketchup on each piece of bread. Divide mushroom mixture between pieces. Sprinkle mozzarella over each, leaving a bit in reserve. Top cheese with ham, then sprinkle ham with remaining cheese. Bake zapiekanki until bread is golden and crisp and cheese is lightly browned and bubbly, 12-14 minutes. Top with mayonnaise and your choice of toppings.

roll, unsalted butter, onion, white, kosher salt, ketchup, mozzarella, deli ham, mayonnaise

Taken from www.epicurious.com/recipes/food/views/polish-style-pizza-with-mushrooms-and-chives-zapiekanka (may not work)