BABY BOK CHOY WITH SHIITAKE MUSHROOMS

1 bunch baby bok choy
1 Tablespoon olive oil
2 tsp minced fresh ginger
2 cloves garlic, minced
4 ounces fresh shiitake mushrooms, stems discarded and caps sliced into 1/4"-wide strips
1 1/2 tsp cornstarch
1/4 tsp salt
1/8 tsp pepper
1/2 cup water

Trim 1/4" off root ends of bok choy. Cut into 2" sections, keeping stems and leaves in separate piles. In a large nonstick skillet, heat oil over medium-high heat. Add ginger and garlic and cook 30 seconds until fragrant. Add bok choy stems and mushrooms and cook, stirring, two to three minutes or until vegetables are beginning to soften. Meanwhile, in a small bowl, combine cornstarch, salt, pepper, and water, stirring until cornstarch is dissolved. Add bok choy leaves and cornstarch mixture to pan and cook, stirring constantly, for one minute or until sauce is slightly thickened and leaves are just limp.