Ingredients with Measurements:
- 2 tablespoons olive oil
- 2 large onions, thinly sliced
- 2 teaspoons sugar
- 2 teaspoons balsamic vinegar
- 2 tablespoons butter
- 2 tablespoons all-purpose flour
- 1 cup whole milk
- 1/4 teaspoon freshly ground black pepper
- 1/4 teaspoon freshly grated nutmeg
- 1/2 teaspoon salt
- 2 cups blaa, cut into 1/2-inch cubes
- 1/2 cup grated Gruyere cheese
- 1/4 cup grated Parmesan cheese
- 1 9-inch store-bought or homemade tart crust
Special Equipment Needed:
- 9-inch tart pan
- Rolling pin
Step-by-Step Instructions:
1. Preheat oven to 375°F.
2. Heat the olive oil in a large skillet over medium heat. Add the onions and cook, stirring occasionally, until they are golden brown and caramelized, about 15 minutes. Add the sugar and balsamic vinegar and cook for another 5 minutes. Remove from heat and set aside.
3. In a medium saucepan, melt the butter over medium heat. Add the flour and whisk until combined. Slowly add the milk, whisking constantly, until the mixture is thick and creamy. Add the pepper, nutmeg, and salt and stir to combine.
4. Spread the caramelized onions in the bottom of the tart crust. Top with the blaa cubes. Pour the cream mixture over the top and sprinkle with the Gruyere and Parmesan cheeses.
5. Bake for 25-30 minutes, or until the top is golden brown and the filling is bubbly.
Time:
Preparation Time: 15 minutes
Cooking Time: 25-30 minutes
Temperature: 375°F
Serving Size: 8
Nutritional Information:
Calories: 350
Fat: 22g
Carbohydrates: 24g
Protein: 11g
Substitutions for Ingredients
- Olive oil: vegetable oil
- Balsamic vinegar: red wine vinegar
- Gruyere cheese: Swiss cheese
- Parmesan cheese: Romano cheese
Variations:
- Add cooked bacon or ham to the tart for a heartier dish.
- Substitute spinach for the blaa.
- Use a different type of cheese, such as cheddar or Gouda.
Tips and Tricks:
- Make sure to caramelize the onions until they are golden brown for maximum flavor.
- If the tart crust is getting too dark, cover it with foil for the last few minutes of baking.
Storage Instructions:
Store the tart in an airtight container in the refrigerator for up to 3 days.
Reheating Instructions:
Reheat the tart in a 350°F oven for 10-15 minutes, or until heated through.
Presentation Ideas:
- Slice the tart into wedges and serve with a green salad.
- Cut the tart into small squares and serve as an appetizer.
Garnishes:
- Fresh herbs, such as parsley, chives, or thyme
- Sliced green onions
- Toasted pine nuts
Pairings:
- A crisp white wine, such as Sauvignon Blanc
- A light red wine, such as Pinot Noir
Suggested Side Dishes:
- Roasted potatoes
- Steamed vegetables
- A green salad
Troubleshooting Advice:
- If the tart is too dry, add a few tablespoons of cream to the filling before baking.
- If the tart is too wet, bake it for a few minutes longer.
Food Safety Advice:
- Refrigerate any leftovers within 2 hours of baking.
Food History:
The tart is a classic French dish that has been enjoyed for centuries. It is believed to have originated in the 16th century in the region of Normandy.
Flavor Profiles:
This tart has a rich, savory flavor from the caramelized onions and Gruyere cheese, and a hint of sweetness from the balsamic vinegar. The nutmeg and pepper add a subtle warmth, while the blaa adds a light, earthy flavor.
Serving Suggestions:
This tart is best served warm, with a dollop of sour cream or crème fraîche.
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