Heat oven to 425°F. Heat the oil in a large skillet over medium heat. Add the onion and cook, covered, stirring occasionally, for 5 minutes. Add the jalapeños, bell pepper and garlic and cook, covered, stirring occasionally, until the vegetables are just tender, 6 to 8 minutes. Stir in the beans, corn and chili powder and cook for 2 minutes. Stir in the lime juice and cilantro.
Spread 1/2 cup enchilada sauce on the bottom of an 8-in. square or 1 1/2-qt baking dish. Top with 3 tortillas, tearing them to fit as necessary. Spread a third of the remaining enchilada sauce over the top (about 1/2 cup). Top with a third of the bean mixture and 1/2 cup cheese; repeat twice.
Bake until the lasagna is heated through and the top is beginning to brown, 12 to 15 minutes. Let stand for 5 minutes. Serve with cilantro, lime wedges, sour cream and hot sauce, if desired.
tips & techniques
Make it ahead: Line the baking dish with foil, leaving a 3-in. overhang on two sides. Prepare the lasagna as directed. After baking, allow it to cool in the dish. Use the overhangs to lift it out; wrap tightly in plastic, then foil, and freeze for up to 2 months. To serve: Let thaw in the refrigerator, remove the foil and plastic, and transfer the lasagna to a casserole dish. Reheat in a 375°F oven, about 20 minutes.
Total Fat 15g
Saturated Fat 6g
Total Carbohydrate 34g
Dietary Fiber 8g
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