---
title: Caramelized Onion & Mushroom Flatbreads
source:
  name: HelloFresh
  url: https://www.hellofresh.com/recipes/caramelized-onion-and-mushroom-flatbreads-68dab8cf9ed4d679418a7d3a
servings: 2
prep_time: 15 minutes
cook_time: 20 minutes
time_required: 30 minutes
difficulty: Hard
allergens: [Milk, Wheat]
tags: [Veggie, Italian, Pizza, Comfort Food, Weeknight]
rating: 4.5
rating_count: 2
source_chef: Recipe Development Team
review_highlights:
  - theme: Flavor
    text: The caramelized onion and mushroom combo with two cheeses gets rave reviews
  - theme: Ease of prep
    text: Making dough from scratch is time-consuming but many loved the authentic homemade experience
image: "data/recipes/caramelized-onion-mushroom-flatbreads.jpg"
---

Wash and dry all produce. Halve, peel, and thinly slice @onion{2%medium}. Clean and quarter @cremini mushrooms{8%oz}. Roughly chop @thyme{1%tbsp}. Grate @mozzarella cheese{1%cup} and crumble @feta cheese{½%cup}. Tear @pizza dough{1%lb} into two equal portions. Lightly flour a clean work surface with @flour{2%tbsp}.

Heat @olive oil{2%tbsp} in a #large skillet{} over medium heat. Add sliced onions, @garlic powder{½%tsp}, @salt{1%tsp}, and @black pepper{½%tsp}. Cook, stirring occasionally, until deeply caramelized and tender ~{15%minutes}. Transfer to a bowl and stir in @roasted onion & garlic spread{2%tbsp}.

Wipe out skillet and return to medium-high heat. Add mushrooms and cook until browned and any released liquid has evaporated ~{5%minutes}. Season with salt and pepper, then stir in half the chopped thyme.

Line a #baking sheet{} with #parchment paper{}. Stretch each dough portion into a 10-inch oval on the prepared sheet.

Spread the caramelized onion mixture evenly over each flatbread. Top with mozzarella cheese. Bake until crust is golden brown and cheese is bubbly ~{14%minutes}.

Remove from oven and immediately top each flatbread with feta cheese, sautéed mushrooms, and remaining fresh thyme. Let rest ~{2%minutes} before slicing and serving.