Triple-Pepper Tempeh Stir-Fry

Ingredients

• 1/4 cup light soy sauce
• 1/2 cup vegetable stock
• 1 teaspoon honey
• 1 1-inch segment fresh ginger, peeled and finely grated
• 1/2 teaspoon crushed red pepper flakes
• 2 8-ounce packages soy tempeh, cubed
• 1 cup sliced button mushrooms
• 12 shiitake mushrooms, stems removed and thinly sliced
• 1 medium red onion, thinly sliced
• 1 medium red bell pepper, halved and cut into 1/4-inch slices
• 1 medium yellow bell pepper, halved and cut into 1/4-inch slices
• 1 medium green bell pepper, halved and cut into 1/4-inch slices
• 2 tablespoons arrowroot
• 1 tablespoon toasted sesame seeds