Simple Tomato Soup

1. 1

   Heat butter and olive oil in a large saucepan over medium-low heat and cook onion and garlic until onion is soft and translucent, about 5 minutes. Add tomatoes, water, sugar, salt, pepper, red pepper flakes, celery seed, and oregano. Bring to a boil. Reduce heat, cover, and simmer for 15 minutes.

2. 2

   Remove from heat and puree with an immersion blender. Reheat soup until warm and season with more salt and pepper if desired.

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