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1
In a large nonstick skillet, heat olive oil over medium-high heat until hot.
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2
Add garlic, stirring constantly, and cook for about 2 minutes until garlic becomes golden and brown.
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3
Add both red and yellow onions, stirring occasionally, and cook until onions are partially caramelized, about 15 minutes or longer.
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4
You may need to reduce heat to medium after first 5 minutes.
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5
Add thyme and fennel, stirring once a while, and cook until both fennel and onions are caramelized, another 15 to 20 minutes.
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6
Stir in 2 tablespoon parmesan cheese.
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7
Season to taste with salt and black pepper.
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8
Remove from heat and set aside.
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9
Preheat oven to 375F (190C).
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10
Coat a 9-inch tart pan or pie plate with cooking spray or grease with butter.
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11
Line one sheet of phyllo over pan.
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12
Brush with a bit olive oil, sprinkle with about 1/2 teaspoon bread crumbs.
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13
Line second phyllo sheet over first layer by forming a overlap edge around pan.
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14
Repeat layers until all phyllo sheets are used.
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15
Brush mustard evenly on final phyllo sheet, sprinkle with remaining 1 tablespoon parmesan cheese.
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16
Place caramelized onion and fennel evenly over phyllo layers.
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17
Roll overlapping phyllo pastry along edges to form a rustic crust.
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18
It doesn't have to be perfect, phyllo pastry may start to crack a bit while you are rolling it, which is totally fine.
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19
Top with goat cheese and bake in preheated oven for about 35 minutes, or until phyllo pastry becomes golden, brown and crispy, cheese starts to brown in spot.
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20
Remove from oven, let cool for a few minutes.
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21
Cut into wedges and serve hot.