In a medium bowl, mix together the brown sugar, chili powder, paprika, black pepper, 2 tablespoons garlic powder, 2 teaspoons onion powder, kosher salt, cumin, cinnamon, jalapeno seasoning, and cayenne pepper. Rub generously onto the pork spareribs. Cover, and refrigerate for at least 4 hours, or overnight.

Combine all dry rub ingredients in a bowl and mix well.
Sprinkle on ribs and refrigerate at least 4 hours or overnight.

Step 3: Cook the Ribs

Preheat oven to 250 degrees F.7
place the ribs on a large sheet pan or roasting pan.8
Using a roasting pan, place the ribs, meat side up in pan. Combine the braising sauce ingredients and microwave for one minute on high.
carefully pour in the braising liquid over the top of the ribs.
cover the pan with foil, sealing it tightly, and then tilt the pan to evenly distribute the liquid.
Bake in the 250-degree F oven for about 2 1/2 hours.
TIP: The ribs are done when they are fork tender.

Remove the pan of ribs from the oven and let the ribs rest for a while. Refrigerate to make them easier to cut. when cool, portion into two bone portions. 1 bone portions are ok but can be difficult to brown under the broiler.
When ready to serve, generously baste the ribs, top and bottom with your favorite sauce. Grill or place under the broiler until they are warmed through. Baste with BBQ sauce several times when broiling for a nice glaze.