Preheat your oven to 375°F (190°C). Lightly grease a 9x13 inch baking dish.

Ensuring the dish is greased prevents sticking and makes cleanup easier.📌

In a large skillet, heat 1 tablespoon olive oil over medium-high heat. Add 1 pound ground beef and 1 medium chopped onion. Cook, breaking up the beef with a spoon, until the beef is browned and the onion is softened, about 5-7 minutes. Drain any excess fat.

Draining excess fat is crucial for a less greasy and more flavorful sloppy joe mixture.📌

Stir in 2 cloves minced garlic and cook for another minute until fragrant. Add 1 (15 oz) can tomato sauce, 1/4 cup ketchup, 1 tablespoon Worcestershire sauce, 1 teaspoon Dijon mustard, 1 tablespoon brown sugar, 1/2 cup water, 1/2 teaspoon salt, and 1/4 teaspoon black pepper to the skillet. Bring the mixture to a simmer, then reduce heat to low and let it simmer for 5-10 minutes, allowing the flavors to meld and the sauce to thicken slightly.

Simmering allows the flavors to deepen and the sauce to reach the right consistency for the casserole.📌

While the sloppy joe mixture simmers, open 1 (16 oz) can canned biscuit dough and cut each biscuit into quarters.

Cutting the biscuits into smaller pieces ensures they cook evenly and provide a good ratio of biscuit to sloppy joe mixture in each bite.📌

Pour the sloppy joe mixture into the prepared 9x13 inch baking dish and spread it evenly.

A uniform layer ensures even baking and distribution of flavors.📌

Arrange the quartered canned biscuit dough pieces evenly over the sloppy joe mixture. Then, sprinkle 1.5 cups shredded cheddar cheese over the biscuits.

Make sure the biscuits aren't too crowded to allow them to rise and cook through.📌

Bake for 20-25 minutes, or until the biscuits are golden brown and cooked through, and the cheese is melted and bubbly.

Check for doneness by inserting a toothpick into a biscuit; it should come out clean.📌