Creamy, tangy queso macaroni salad with lime, sweet corn, mild green chile-style warmth, and crumbled queso fresco—an easy make-ahead side for summer cookouts and potlucks.
Cook the macaroni. Bring a large pot of well-salted water to a rolling boil. Add the elbow macaroni and cook according to package directions until just past al dente for salad (usually 1 minute longer than for hot pasta), tender but not mushy.
Cool the pasta properly. Drain in a colander, then immediately rinse with cold water, tossing, until no longer warm. Shake off excess water very well and transfer to a large bowl to finish cooling.
Prep the corn and vegetables. Make sure the corn is cooked and chilled (cut kernels from cooled ears if using fresh; pat dry if very moist). Finely dice the red bell pepper and red onion, and chop the cilantro.
Make the dressing base. In a medium bowl, whisk together the mayonnaise, sour cream, lime juice, and lime zest (if using) until smooth.
Season the dressing. Whisk in chili powder, cumin, smoked paprika, salt, black pepper, and 1 teaspoon hot sauce. Taste and adjust heat. If very thick, whisk in 1–2 tablespoons milk or water until it slowly ribbons off the whisk.
Combine pasta and vegetables. To the cooled macaroni, add corn, red bell pepper, red onion, and cilantro. Toss gently to distribute evenly.
Fold in the dressing. Pour about two-thirds of the dressing over the pasta mixture and fold until lightly coated. Add more dressing as needed until creamy but not gloopy (reserve a little to refresh before serving if desired).
Add the queso fresco. Gently fold in the crumbled queso fresco (don’t crush it completely). Taste and adjust with more salt, pepper, or lime juice as needed.
Chill the salad. Cover tightly and refrigerate at least 30–45 minutes, and up to 24 hours, to let flavors meld and the dressing cling.
Finish and serve. Stir gently. If stiff or dry, loosen with reserved dressing or a spoonful of mayonnaise plus a splash of lime juice. Top with extra queso fresco, cilantro/green onion, and a pinch of chili powder or smoked paprika.