Preheat your oven to 350°F. Take your cream cheese out of the fridge now so it softens up completely—this makes mixing so much easier. Trust me on this (nobody wants lumpy dip).
Combine softened cream cheese, cheddar cheese, olive oil, and heavy cream in a large bowl. Mix everything together until it's smooth and creamy, about 2 minutes of stirring. Don't overthink it—you're just blending, not whipping.
Stir in your chopped jalapeños, minced garlic, lemon juice, smoked paprika, salt, and black pepper. This is when the jalapeño popper dip cream cheese starts smelling absolutely incredible. Mix until everything's evenly distributed throughout.
Fold in the green onions gently, reserving about 1 tablespoon for garnish on top. This keeps some fresh onion flavor popping through when people taste it. I learned this trick after my first batch looked a little boring.
Pour your mixture into an oven-safe baking dish (an 8x8 inch dish works perfectly). Smooth out the top with a spatula and sprinkle that reserved green onion across the surface. It'll look pretty and signal what's inside.
Bake at 350°F for 18-20 minutes until the dip is bubbly around the edges and heated through completely. You'll see little bubbles forming at the edges—that's your signal it's done. Don't panic if it looks a little shiny from the oil (that's completely normal).
Remove from the oven and sprinkle fresh cilantro on top while it's still warm. Let it cool for about 3 minutes before serving with your favorite crackers or veggies. This gives it time to set up slightly so it's easier to scoop.