Step 1

Heat a teaspoon of olive oil in a dutch oven over medium to medium-low. Add in the diced onions, jalapeños and garlic with a small pinch of salt. Stir and cook 5 to 8 minutes or until softened.

Step 2

Add in the ground beef, use a wooden spoon to break it up into small crumbles and cook until no longer pink

Step 3

Next add in ketchup, water, vinegar, mustard and worchestershire sauce. Then measure and add in the sugar, salt, cayenne, paprika abd black pepper.

Step 4

Stir, cover and simmer for 20 minutes.

Step 5

Move your oven rack to the highest position and preheat your broiler to high.

Step 6

Meanwhile toast hamburger buns or rolls and place on a rimmed, metal baking sheet.

Step 7

Top with a few spoonfuls of the meat mixture and top with slices of muenster cheese. Slip under the broiler for 30 to 45 seconds or until melted.

Step 8

Top with a spoonful more of the meat mixture, then add slices of jalapeño and crispy fried onions. Replace the top bun and serve.