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1
Adjust oven rack to middle position, place 4 individual serving bowls on rack, and heat oven to 200°F.
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2
Whisk sour cream, 2 tablespoons cilantro, 1 teaspoon lime zest, 1 tablespoon lime juice and 1/4 teaspoon salt together in bowl; cover and refrigerate until ready to serve.
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3
Toss beef with 2 tablespoons water, baking soda, 1/4 teaspoon salt, and pinch pepper in bowl until thoroughly combined; let sit for 20 minutes.
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4
Meanwhile, heat 1 tablespoon oil in 12-inch nonstick skillet over medium heat until shimmering. Add rice and cook, stirring often, until edges begin to turn translucent, about 2 minutes.
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5
Add remaining 2 cups water and 1/2 teaspoon salt and bring to boil. Cover, reduce heat to low and simmer until liquid is absorbed and rice is tender, about 20 minutes.
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6
Off heat, to the rice add remaining 1 teaspoon lime zest and remaining 2 tablespoons lime juice and fluff gently with fork to incorporate. Divide cooked rice among warmed bowls, cover with aluminum foil, and keep warm in oven.
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7
Heat remaining 1 tablespoon oil in now-empty skillet over medium heat until shimmering. Add onion and bell pepper and cook until just beginning to brown, 5 to 7 minutes. Add beef mixture, breaking up meat with wooden spoon, and cook until no longer pink, 6 to 8 minutes.
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8
Stir in cumin, garlic and chili powder and cook until fragrant, about 1 minute. Stir in tomato sauce, beans, corn and 1 teaspoon salt and cook until slightly thickened, about 3 minutes.
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9
Spoon chili over rice in bowls, sprinkle with remaining 2 tablespoons cilantro, and serve with lime-cilantro crema.