Step 1

In a mixing bowl, stir together ketchup, BBQ sauce, water, cornstarch, beef concentrate and chili powder.

Step 2

In a large skillet, heat a drizzle of cooking oil in pan and heat to medium-high. Add onion and cook until softened, about 5 minutes.

Step 3

Add ground beef, sprinkling evenly with salt and pepper. Break meat up and cook until browned, 3-5 minutes.

Step 4

Reduce heat to medium and add sauce mixture to the pan. Cook, stirring regularly, until sauce thickens and beef is cooked through, around 20 minutes.

Step 5

Serve on toasted hamburger buns with pickle slices.