Heat a large pot over medium heat and add a tablespoon of oil.
Add chopped onion and sauté until translucent, about 5 minutes.
Stir in minced garlic and diced jalapeños, cooking for another 1-2 minutes.
Add the corn kernels to the pot and stir well, cooking for about 3 minutes.
Pour in the vegetable broth, bringing the mixture to a boil.
Reduce heat and let simmer for 10-15 minutes, stirring occasionally.
Using an immersion blender, blend the soup until smooth.
Stir in the heavy cream, lime juice, and zest, cooking for an additional 5 minutes.
Season with salt and black pepper to taste, adjusting as needed.
Serve hot, garnished with cotija cheese and fresh cilantro.