Heat vegetable oil in a large wok or skillet over medium-high heat; cook and stir beef until browned, 3 to 4 minutes. Move beef to a plate and add garlic, onion, and bell pepper. Cook and stir vegetables for 2 minutes.
Combine soy sauce, lime juice, honey, miso, ginger, and srirarcha in a bowl.
Add beef into vegetables and add sauce mixture. Continue to cook and stir until vegetables are tender, about 2 more minutes.
Garnish with peanuts.