Preheat the oven to 375°F (190°C).
Grease a 9×13-inch baking dish.
Cook the ground beef and onion over medium heat until browned.
Add the garlic and cook for 1 minute.
Stir in the salt, pepper, chili powder, and smoked paprika.
Mix in the diced tomatoes and cook for 2 minutes.
In a separate bowl, combine the sour cream and cream cheese until smooth.
Spread the beef mixture evenly into the prepared baking dish.
Spoon the cream cheese mixture evenly over the beef layer.
Sprinkle 1 cup of cheddar cheese over the top.
Arrange the biscuit dough pieces evenly across the casserole.
Brush the biscuits with melted butter.
Sprinkle the remaining cheddar cheese over the biscuits.
Bake for 30–35 minutes or until the biscuits are golden brown.
Garnish with chopped parsley before serving.
Serve warm and enjoy.