Tomato-Mozzarella Gratin
Ingredients:
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5 large tomatoes, sliced
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1 (8 ounce) ball fresh mozzarella cheese, thinly sliced
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½ teaspoon dried oregano, or to taste
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½ teaspoon garlic powder, or to taste
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1 pinch herb salt, or to taste
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freshly ground black pepper to taste
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2 tablespoons dry bread crumbs
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2 tablespoons grated Parmesan cheese
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2 tablespoons butter at room temperature, cut into cubes
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1 tablespoon chopped fresh parsley, or to taste