Start by heating olive oil in a skillet over medium heat. Add chopped onion and sauté until it softens and turns lightly golden. Stir in garlic and corn, then sprinkle with chili powder, smoked paprika, and a pinch of cayenne. Cook until everything is coated and fragrant.
Reduce the heat and add cream cheese, stirring until it melts into the corn mixture. Add sour cream to give it a smooth, tangy finish. The mixture should be creamy and rich with little pops of sweetness from the corn.
Melt the salted butter in a small pan and stir in the leftover spice mix. This butter is what makes the sliders irresistible, giving the tops that golden, flavorful crust.
Place the bottom half of the dinner rolls on a lined baking sheet. Spread the creamy corn dip evenly across them. Add shredded cheese, cilantro, mayo, and a squeeze of lime juice. Cover with the top half of the rolls and brush the spiced butter generously on top.
Preheat the oven to 400°F. Cover the sliders with foil and bake for 10 minutes. Remove the foil and bake for another 10 minutes until the cheese is melted and the tops are golden. Serve hot and pull apart to enjoy!