- Preheat the oven to 350°F (175°C).
- In a large bowl, combine the chopped spinach, artichoke hearts, cream cheese, sour cream, mozzarella cheese, Parmesan cheese, garlic, salt, pepper, and red pepper flakes.
- Mix until well combined.
- Transfer the mixture to a greased baking dish.
- Sprinkle gluten-free breadcrumbs on top.
- Bake for 25-30 minutes, or until the top is golden and bubbly.
- Let it cool for a few minutes before serving.
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