1 pound lean ground beef
1 small onion, chopped fine
¼ cup finely chopped green bell pepper
1 tablespoon Worcestershire sauce
1 (10 ounce) can diced tomatoes with green chile peppers
1 (9 ounce) package frozen corn
½ cup medium salsa
2 tablespoons taco seasoning mix
1 (8 ounce) package elbow macaroni
Heat a large skillet over medium-high heat. Cook and stir beef, onion, bell pepper, and Worcestershire sauce in the hot skillet until browned and crumbly, 5 to 7 minutes; drain and discard grease. Add tomatoes, corn, salsa, and taco seasoning. Cover and simmer while preparing macaroni.
Bring a large pot of lightly salted water to a boil. Cook elbow macaroni in the boiling water, stirring occasionally until cooked through but firm to the bite, 8 minutes. Drain. Stir macaroni into beef mixture.