**1. Prepare the Ingredients:**
- Place the frozen corn in the slow cooker.
**2. Add Cheese and Cream:**
- Scatter the cream cheese and butter cubes over the corn. Sprinkle the shredded cheddar cheese, garlic powder, onion powder, salt, and pepper on top. Pour in the heavy cream.
**3. Cook:**
- Cover and cook on low for 3-4 hours or on high for 1.5-2 hours, stirring occasionally to ensure even cooking and melting.
**4. Stir and Serve:**
- Once the mixture is creamy and the cheese is fully melted, stir well to combine. Adjust seasoning if needed. Garnish with fresh parsley and serve warm.