Beef Nacho Casserole

Beef Nacho Casserole 2 tablespoons olive oil 1/4 pound pre-sliced sweet red peppers about 1/2-inch-wide strips 1/4 pound pre-sliced sweet yellow peppers about 1/2-inch-wide strips 1 pound lean ground beef 1/2 teaspoon garlic salt 2 tubes 10 ounces each refrigerated pizza dough 3 cups shredded taco-cheese blend 1 jar 16 ounces medium-hot salsa 1 can 2.2 ounces sliced black olives, drained (about 1/4 cup) 3 large scallions trimmed and sliced Heat oven to 375 degrees. Coat 13 x 9 x 2-inch baking dish with nonstick cooking spray. In large skillet, heat oil over medium-high heat. Add peppers, ground beef, and garlic salt; cook, stirring to break up clumps of beef until the peppers are soft and beef is no longer pink about 5 minutes. Drain off any excess fat from skillet. Remove pizza dough from tubes. Cut the dough crosswise into 1/2-inch-wide slices, then cut each slice into quarters. In large bowl, toss together dough pieces and salsa. Add cooked meat mixture, 2 cups of the taco-cheese blend and olives. Scrape mixture into baking dish. Sprinkle the remaining 1 cup taco-cheese blend over the top. Bake at 375 degrees for 30 minutes. Sprinkle scallions evenly over the top. Bake an additional 5 minutes.