This Caramelized Onion Pesto Flatbread Pizza is an easy yet gourmet-style dish with a crispy flatbread base, rich pesto sauce, sweet caramelized onions, and gooey melted cheese. Perfect for a light dinner, appetizer, or snack!
Preheat oven to 400°F (200°C) and place flatbreads on a baking sheet.
In a skillet, heat the butter and olive oil over medium-low heat. Add the sliced onions and cook for 20-25 minutes, stirring occasionally, until golden brown. Stir in balsamic vinegar and cook for an additional 2 minutes. Remove from heat.
Spread pesto evenly over each flatbread. Top with shredded mozzarella, caramelized onions, and a sprinkle of Parmesan cheese.
Bake the flatbreads for 8-10 minutes or until the cheese is melted and the edges are crispy.
Top with red pepper flakes, fresh basil, or arugula for garnish. Slice and serve!