Melt Country Crock® Spread in 12-inch skillet over medium-high heat and cook onion, stirring occasionally, 5 minutes or until tender. Stir in rice and cook 1 minute. Stir in water and 2 teaspoons Knorr® Chicken Bouillon and cook covered 10 minutes. Stir in corn and cook covered an additional 10 minutes or until rice is tender.
Fluff rice with fork, then stir in poblano peppers, remaining Knorr® Chicken flavor Bouillon and 1 tablespoon Hellmann's® or Best Foods® Light Mayonnaise. Combine remaining Mayonnaise with crema in small bowl.
Turn rice mixture into 7 x 10-inch glass baking dish, then top with mayonnaise mixture and sprinkle with cheese. Broil 4 minutes or until golden and cheese is melted.