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1
Heat olive oil in a heavy-bottomed pot over medium heat; add onion, carrot, and celery, sauté until softened, 6 minutes.
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2
Add garlic and sauté 1 minute until fragrant.
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3
Pour in tomatoes with their juice, add stock, beans, oregano, and bay leaf; bring to a simmer.
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4
Reduce heat to low and cook uncovered 25 minutes, stirring occasionally, until vegetables are tender and flavours meld.
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5
Season with salt and pepper to taste; remove bay leaf.
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6
Finish with fresh parsley and serve hot.