Gruyere, Mushroom, & Caramelized Onion Bites
Little Spice Jar Food Blog
Little Spice Jar Food Blog
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Ingredients

  • 4 tablespoons salted butter, divided
  • 2 tablespoons vegetable oil, divided
  • 5-6 ounces crimini or button mushrooms, sliced
  • 2 medium yellow onions, thinly sliced
  • 1/4 teaspoon dried thyme
  • 1 tablespoon sugar
  • 1 1/2 tablespoon balsamic vinegar
  • 1/4 teaspoon garlic powder
  • salt and pepper, to taste
  • 4 ounces grated gruyere cheese (I used applewood smoked gruyere)
  • 1 package (1 pound) frozen puff pastry, thawed
  • 1 egg, lightly beaten

Instructions

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