Step 1: In a large skillet or Dutch oven, heat the olive oil over medium-high heat. Add the ground beef and cook, breaking it up with a spoon, until it's browned and no longer pink. If using fattier beef, drain off any excess grease.
Step 2: Reduce the heat to medium. Add the finely diced onion and bell pepper (if using) to the skillet. Cook, stirring occasionally, for 5-7 minutes until the vegetables have softened. Add the minced garlic and cook for another minute until fragrant.
Step 3: Stir in the tomato paste, cooking for 1-2 minutes, allowing it to slightly caramelize and deepen in color. This step builds a rich flavor base for your sloppy joe recipe.
Step 4: Pour in the crushed tomatoes, ketchup, brown sugar, apple cider vinegar, Worcestershire sauce, Dijon mustard, smoked paprika (if using), and cayenne pepper (if using). Stir everything together until well combined.
Step 5: Bring the mixture to a gentle simmer, then reduce the heat to low, cover, and let it simmer for at least 15-20 minutes, stirring occasionally. This allows the flavors to meld and the sauce to thicken to a perfect sloppy consistency. For an even deeper flavor, you can let it simmer longer, up to 30-40 minutes.
Step 6: Taste the sloppy joe mixture and season with salt and freshly ground black pepper as needed. You might want a little more sugar or vinegar depending on your preference. The perfect sloppy joe recipe is all about balance!
Step 7: While the sloppy joes are simmering, lightly toast your hamburger buns. This adds texture and helps prevent them from getting too soggy.
Step 8: Spoon a generous amount of the warm sloppy joe mixture onto the toasted buns and serve immediately. Get ready for some delicious, messy fun!