In a large skillet over medium-high heat, brown 2 pounds ground beef with 1 teaspoon salt, 1 teaspoon black pepper, and 2 teaspoons minced garlic. Cook until the beef is no longer pink, then drain any excess grease.
Stir in 2 teaspoons Italian seasoning, 1 (15-ounce) can crushed tomatoes, 1 (8-ounce) can tomato sauce, 1 tablespoon sugar, and 1 (15-ounce) package pepperoni.
Reduce the heat to low and simmer for 5 to 7 minutes, stirring occasionally, until the flavors are well combined and the sauce is heated through.