Add the butter to a frying pan on medium heat and cook the onion down until it gets browned, about 20 minutes. Add the jalapenos halfway through cooking and season with salt and pepper.

Turn the heat to high. Add the ground beef to the pan and break up while cooking. Season with salt and pepper. Cook about 10 minutes until cooked through and lightly browned.

Remove from heat and pour the mixture into a bowl. Allow to cool for 10 minutes.

Mix the pickles, tomatoes, and cheese into the meat mixture. Stir to combine.

Put the egg into a small bowl and whisk.

Lay out a tortilla and brush some egg on half the tortilla. Place about 1/2 cup of the meat mixture on to the tortilla forming a line across the tortilla.

Roll up the tortilla starting with the non- egg side, so that the egg helps seal the taquito. Brush the outside of the tortillas with oil so they don’t stick on the grill.

Preheat the grill to high.

Meanwhile, mix the bbq sauce, mayo, and hot sauce.

Grill the taquitos until browned. Serve on a platter with the sauce.