Asian Peanut Butter Pork

My mom made this the other day and gave me some to try - I loved it!  And both Charlotte and Madeleine ate their whole serving as well.  So here's the recipe:

Asian Peanut Butter Pork 

1 onion, sliced into rings

1 (1½ to 2 pound) pork tenderloin

¼ cup brown sugar, firmly packed

¼ cup soy sauce

3 tablespoons white wine vinegar

3 tablespoons water

2 garlic cloves, chopped

½ cup creamy natural peanut butter

2 tablespoons chopped peanuts (optional garnish)

1 lime, cut in wedges (optional garnish)

Use a 4 quart slow cooker.  Put the onion slices into the bottom of your stoneware and place the pork on top.  Add the brown sugar, soy sauce, vinegar, water, garlic and peanut butter.  No need to stir – the peanut butter needs to melt before you can do so.  Cover and cook on low for 8 hours, or on high for 4 to 6 hours.  One hour before serving, flip the meat over to allow the other side to soak up the peanut-buttery goodness.  Garnish with chopped peanuts, and serve with lime wedges.