Mushroom and Pork Meatballs with Broccolini Rice

INGREDIENTS

1 1/2 cups

shiitake mushroom caps (about 4 oz.)

10 oz

pork tenderloin, cut into 1/2-in. pieces

6 tbsp

whole-wheat panko (Japanese breadcrumbs)

1/2 tsp

kosher salt, divided

1/2 tsp

black pepper, divided

large egg, lightly beaten

2 tbsp

canola oil, divided

bunch Broccolini, finely chopped

1 cup

unsalted chicken stock, divided

2 tbsp

rice or apple cider vinegar, divided

1 tbsp

light brown sugar

1 tbsp

reduced-sodium soy sauce

1 tbsp

Sriracha chili sauce

2 tsp

cornstarch

pkg. precooked brown rice (such as Uncle Ben's)