Caramalized Onion and Mushroom Flatbread

Caramelized Onion and Mushroom Flatbread Pizza

This Caramelized Onion and Mushroom Flatbread recipe is an easy appetizer for your next party! You can use store-bought flatbread OR refrigerated pizza dough! Either way, the flavors are spot on and will keep your guests happy!
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Course: Appetizer
Cuisine: American
Keyword: flatbread, mushrooms
Prep Time: 40 minutes
Cook Time: 15 minutes
Total Time: 55 minutes
Servings: 14 Flatbreads
Author: Aleka Shunk


  • 16 oz. Pizza Dough ((or store-bought flatbread))
  • 1 Large Onion ((or two medium))
  • 1/4 Cup Olive Oil ((+ 1 Tbsp.))
  • 4 Cups Mixed Mushrooms ((I used Cremini, Bella & Shiitake))
  • 2 Cups Shredded Monterey Jack Cheese
  • 6-8 Sprigs Fresh Thyme
  • 3 Large Garlic Cloves
  • 3 Tbsp. Sherry Wine
  • 1/8 Tsp. Salt
  • 1/8 Tsp. Pepper


  • Preheat oven to 425 degrees F.
  • Add onions. thyme sprigs and 1/4 cup oil to a saute pan and slowly saute for at least 30 minutes until you get a nicely browned/caramelized color. The thyme will fall off the sprigs so no need to remove it.
  • Add your mushrooms and garlic and saute for another 5 minutes.
  • Add the sherry wine and let simmer for 2-3 more minutes before taking off the heat.
  • If using pizza dough: 
    Roll your dough out as this as you can without putting holes in it.  Brush 1 tbsp. oil over top of the dough and season with salt/pepper.
  • If using store-bought flatbread: 
    Brush 1 tbsp oil over top of the dough and season with salt/pepper.
  • Bake dough/flatbread at 425 F for 10-12 minutes or until golden brown. (store-bought flatbread may brown quicker!)
  • Once your crust is nice a crispy. Remove from oven and spread the mushroom mixture evenly over top topping finishing with the cheese. Bake 5 more minutes or until melted. Cut into strips and serve warm!

Recipe Notes

*Using store-bought flatbread is a quicker way to make this flatbread and tastes just as good!
*Add the cheese and mushrooms right before your guests arrive and pop it in the oven to serve it hot!