Heat 2 tablespoons butter in a large skillet over medium-high heat, season catfish fillets with cajun seasoning on both sides, and cook 4โ5 minutes per side until golden and cooked through.
Remove catfish to a plate and add remaining butter and minced garlic to the skillet, stirring for 30 seconds until fragrant.
Add chopped collard greens and chicken broth, cooking 6โ8 minutes until greens are tender, stirring occasionally.
Pour in heavy cream, stir to combine, and simmer 2 minutes until slightly thickened, then return catfish to the skillet to warm through.
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