Heat olive oil in a large skillet over medium-high heat. Cut chicken into uniform pieces so everything cooks at the same rate within five to seven minutes total.
Add chicken and season generously with salt and pepper. Cook for 6-7 minutes until the outside is golden and cooked through, stirring occasionally.
Remove chicken to a plate and add diced onion and butternut squash to the skillet. Sauté for 4 minutes until the squash begins softening and the onion turns translucent.
Stir in minced garlic and ginger, cooking for 30 seconds until fragrant. Add broccoli florets and red bell pepper next, stirring constantly for two minutes.
Return chicken to the skillet with the cozy 30 min fall stir fry recipe components. Pour in chicken broth and bring to a simmer.
Whisk cornstarch with 2 tablespoons cold water and add to the skillet. Stir constantly for 1-2 minutes until the sauce thickens and coats everything evenly.
Add soy sauce, maple syrup, and thyme to finish. Taste and adjust seasoning with additional salt, pepper, or soy sauce as needed. The dish should taste balanced between sweet and savory.