Chinese Beans and Bok Choy with Peppered Shrimp

Ingredients

• 3/4-1 pound large shrimp (shells and tails removed)
• 1 teaspoon coarsely ground black pepper
• 1 teaspoon hot chili oil
• 1 tablespoon extra-virgin olive oil
• 1 small yellow onion, thinly sliced
• 1/2 pound Chinese long beans, halved (or whole green beans, trimmed)
• 2 cloves garlic, minced
• 1 small red bell pepper, cored and cut into 1/4-inch strips
• 2 large stalks bok choy, including leaves (thinly sliced crosswise)
• 1-2 tablespoons black bean sauce (to taste)
• Hot, cooked soba noodles or brown rice