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Preheat oven to 375.
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Line a baking sheet with foil or parchment paper.
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Toss the tomatoes, peppers, onion, and garlic with the olive oil. Sprinkle on salt and pepper to taste.
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Place on the baking sheet and bake for 45 minutes.
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Allow to cool slightly then puree in a blender with the tomato paste.
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In a sauce pan, heat the broth on medium heat.
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Stir in the pureed vegetables.
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Add the spices and continue to stir.
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Serve hot or allow to cool before freezing.