Add butter and olive oil to the dutch oven over medium-high heat. When the butter is mostly melted, add the onion and cook until softened, about 3-4 minutes.
Add the potatoes and seasoning and stir everything together. Sprinkle the flour over the potatoes and cook an additional 3-4 minutes, stirring occasionally.
Add the corn, crab meat, and broth. Stir everything together, then bring to a boil and reduce to a simmer. Simmer for 25-30 minutes, or until the potatoes are fork-tender. Once done, remove from the heat and stir the heavy cream and fresh parsley into the chowder.
Use an immersion blender to puree about half of the soup. If it helps, you can ladle some of the soup into a bowl, then return the bigger pieces back into the pot after pureeing the rest. Top with additional fresh parsley and serve.
Notes
Click on the time in the instructions to start a timer! StorageRefrigerate in an airtight container for 2-3 days.Freeze in an airtight container for 2-3 months. Defrost in the refrigerator the night before.Cooking Tips
I'm using canned crab, which is already pre-cooked. If you're starting with raw crab, just make sure it's cooked through before serving.
If you don't have an immersion blender, work in batches using a blender. Just be careful, because it's really hot.
Always check the crab meat for shells before cooking with it.
If you forgot to add the flour before the broth, you can take a ladle of the broth and whisk it with the flour until there's no lumps. Then gently stir it into the chowder to cook.
Don't add the cream with the broth, we're saving it for later in the recipe to prevent it from curdling from the heat.