Step 1

Brown ground beef and 1/3 cup onion in a large skillet over medium heat, until the meat is no longer pink, 5 to 7 minutes. Drain, and return the skillet to the stove.

Step 2

Stir tomato sauce and ketchup into the ground beef mixture. Add chili powder, vinegar, garlic powder, hot sauce, salt, and pepper; stir until well combined. Reduce heat to low and simmer uncovered until sauce has thickened, 8 to 10 minutes. If sauce gets too thick, add water to thin it out.

Step 3

Meanwhile steam or simmer hot dogs in hot water until hot.

Step 4

Assemble hot dogs: Place a hot dog in a bun and spoon 2 to 3 tablespoons sauce on top. Sprinkle with remaining onions and drizzle with yellow mustard.