Ingredients
- 2 medium yellow onions, chopped
- 2 tablespoons extra-virgin olive oil or clarified butter
- 1 1/2 pounds / 24 oz small tomatoes (here it's a mix of heirloom cherry & early girls)
- scant 1/2 teaspoon fine grain sea salt
- 2 teaspoons balsamic vinegar
- flour
- zest of one lemon
- 1 pie crust, this rye crust is my go-to
- 1 egg whisked with a tablespoon of water
- 1 egg whisked with a tablespoon of water
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