recipes

Sheet Pan Tart with Roasted Sweet Onions

May 07, 2023 Admin

This sheet pan tart is made with a gorgeous layer of roasted sweet onions and if you’re wondering why I just wrote a sentence with “kids” and “onions”, stick with me. Because this is a meal my kids actually ate, and loved.

What you need to make a sheet pan tart

Don’t limit yourself to roasted onions! Any kind of roasted veggies will be delicious: roasted sweet potatoes, cauliflower, and so on. Or chicken, smoked salmon. Cheese can vary too! Try feta, Parmesan, goat cheese, smoked guoda… Any combination will be wonderful.

Pie Dough

2 sticks unsalted butter, cold and cubed
2 1/2 cups flour + more for rolling
2 teaspoons salt
2-4 tablespoons cold water

Filling

12 slices of cheese – extra sharp cheddar, provolone, Swiss, etc.
2 cups of cottage cheese
4 eggs
dash of cream or milk
herbs + seasonings that your family enjoys (I used fresh thyme.)

How to make a sheet pan tart

Make the dough

1⃣ Combine butter and flour. Use one of three methods to mix the flour and butter until it’s like gritty sand:

Food processor
Standing mixer with paddle
Large mixing bowl with handheld pastry cutter

2⃣ Add water. Use a tablespoon to add enough water so your dough comes together. When you can form it into a ball, it’s ready.

Make the filling

1⃣ Slice sweet onions and roast on a sheet pan with olive oil and salt at 425 F for about 25 minutes.

2⃣ In a large mixing bowl combine 2 cups of cottage cheese, 4 eggs, a dash of cream or milk, and the herbs + seasonings that your family enjoys. I used fresh thyme.

Put it all together

When you’re ready to assemble the sheet pan tart, here’s how it goes:

1⃣ Line a second sheet pan with parchment paper.

2⃣ Roll out the dough. Sprinkle a little flour on a clean surface and roll out the dough until it’s about 1/4 inch thick. Tip: Measure it against your pan to make sure it’s big enough.

Par-bake here! Place another piece of parchment on top of the uncooked dough and cover with 2 pounds of pie weights or uncooked beans like I have here. Bake at 425F for 10 minutes.

4⃣ Remove the beans and parchment paper from your parbaked crust. Store the beans and you can reuse them. Line the bottom of the crust with 12 slices of cheese, aged cheddar or provolone, or colby jack, etc. This creates a barrier.

5⃣ Pour the egg mixture on top. And add the roasted onions.

Optional: stud with goat cheese, or feta cheese for extra zing.

6⃣ Bake at 350 F for 45 minutes. Serve warm or cold.

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