In a large pot over medium heat, add ground pork and beef. Break up the meat with a spoon and cook until meat is well browned, Stir in beef broth, scraping up any browned bits on bottom of pan. Add the salsa, tomato paste, spices, salt and pepper. Stir to mix thoroughly and lower heat to simmer. Cook for 1 hour adding more beef broth if it gets too thick.
Noodles
Meanwhile, place lasagna noodles into the bottom of your baking pan. Pour hot water over the noodles, making sure the lasagna noodles are completely covered with water. Let soak for 30 minutes, then drain and discard water.
Assembly
Preheat oven to 375°F. Lightly grease a deep 9x13" baking pan.
Layer 1: Spread 1 1/2 cups of meat sauce in the bottom of the prepared pan. Place 4-6 noodles on top (enough to cover meat sauce). Spread with half of the refried beans. Top with half of corn.
Layer 2: Spoon 1 1/2 cups meat sauce over corn. Place 4-6 noodles on top (enough to cover meat sauce), then sprinkle with half cheddar and pepper jack cheese.
Repeat Layer 1 and 2. To finish, place a final layer of lasagna noodles, topped with another 1 cup of meat sauce to cover the pasta. Top with remaining cheese.
Cover loosely with aluminum foil and bake in preheated oven for 25 minutes. Remove foil, and bake additional 20 minutes for cheese to brown.
Remove from oven, allow to rest 5 minutes and crumble queso fresco or cotija cheese and chopped cilantro on top (optional). Serve hot.
Video
Notes
I use 80/20 ground beef, but you can go leaner if you prefer.