In a large skillet over medium heat, add the ground beef and finely chopped yellow onion. Cook until the beef is browned and the onions are translucent, about 5–7 minutes.

Reduce the heat to low and stir in the ketchup, tomato paste, Worcestershire sauce, yellow mustard, garlic powder, salt, and black pepper. Simmer for about 5–7 minutes.

Preheat your oven and bake the frozen garlic Texas toast according to package instructions, typically 5–7 minutes until golden brown and crispy.

Once the garlic toast is ready, spoon the beef mixture generously over each slice.

Return the toast with sloppy joe filling to the oven for an additional 2–3 minutes until the cheese is bubbly and melted.

Remove from the oven and let cool for a moment before serving.