French Onion Phyllo Squares

Sometimes you have to milk an idea for all it’s worth. My French Onion Mac & Cheese is by far the most popular recipe on my blog, so I was recently thinking about what other way I could highlight the same flavors. How about layers of flaky crispy phyllo dough piled between caramelized onions and gooey fontina and asiago cheeses?

Uh huh, these French Onion Phyllo Squares are as good as they sound. Caramelized onions are really one of those ingredients that just make everything better. Yes, I definitely say this every time I mention them on my blog, but it’s just so true! I served the squares with a simple salad for dinner and they reheated really nicely as well. Yay for another fun spin on a classic!

French Onion Phyllo Squares
Printable Recipe

Ingredients:

Caramelized Onions:
2 tablespoons unsalted butter
2 tablespoons olive oil
3 large yellow onions, sliced (9 cups)

Assembly:
2 tablespoons unsalted butter, melted
2 tablespoons olive oil
30 13×9-inch sheets of thawed phyllo dough (I cut mine from these 18×14-inch sheets)
1 cup shredded fontina cheese
1 cup shredded asiago cheese

Directions:
To make the caramelized onions, heat butter and olive oil over medium low heat in a large nonstick skillet until butter is melted. Add onions, cover, and cook 40 minutes, stirring every 10 minutes. Remove lid and cook an additional 20 minutes, stirring every 10 minutes, or until caramelized. Cool completely to room temperature, about an hour.

To make the squares, heat oven to 350˚F. Prepare and handle phyllo dough according to package directions. Mix butter and olive oil in a small bowl and place 1 sheet of phyllo dough in a 13×9-inch pan; use a pastry brush to lightly evenly coat the sheet of phyllo dough with the butter/olive oil mixture. Repeat until 15 layers of phyllo dough are stacked. Evenly spread cooled caramelized onions on top, then layer 5 more sheets of phyllo dough, brushing each with the butter/olive oil mixture. Evenly sprinkle fontina and asiago cheese on top and layer remaining 10 sheets phyllo dough on top, brushing each with the butter/olive oil mixture. Bake at 350°F for 25 to 30 minutes or until golden brown. Cut into 6 squares. Makes 6 servings.

Nutrition: 528 calories, 32.0g fat, 4.2g fiber, 16.0g protein per serving
Cost: $1.30 per serving

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6 Responses to French Onion Phyllo Squares

  1. You seriously come up with the most delicious stuff ever. This looks worth every last calorie!

  2. Megan says:

    I might actually enjoy these even more than mac and cheese… love phyllo.

  3. Sues says:

    These sound SO good, but I’m also pretty excited I was reminded about your french onion mac and cheese. Must try!

  4. Joanne says:

    How fun! It’s almost like spanakopita but so…not. And really, caramelized onions are way tastier than spinach anyway.

  5. grace says:

    phyllo, cheese, and caramelized onions–there ain’t nothing wrong with that combination, no ma’am!

  6. shannon says:

    what a great idea!! caramelized onions just make anything better… i bet you could easily throw some spinach in there, too ;)

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