Ingredients
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1 tablespoon
extra-virgin olive oil, divided
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1
red bell pepper, chopped
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1
yellow bell pepper, chopped
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1
small red onion, sliced
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2
cloves garlic, minced
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2
tomatoes, peeled, seeded and chopped (see Tip)
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1/4 cup
no salt added fish stock or water
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2 tablespoons
dry red wine
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1 1/2 teaspoons
chopped fresh rosemary, or 1/2 teaspoon dried
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Freshly ground pepper, to taste
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4 4-ounce
tuna steaks, (about 1 inch thick)