Preheat Dutch oven or heavy bottom pot on medium heat and swirl 1 tablespoon of oil to coat. Add onion, garlic and carrots, cook for 3-4 minutes, stirring occasionally. Transfer to a medium bowl and set aside.
Return pot to the stove and add remaining 1 tablespoon of oil. Add beef and sprinkle it with cornstarch, 1/4 teaspoon salt and 1/4 teaspoon pepper. Stir and cook for 5 minutes, stirring a few times.
Add broth and deglaze the pot by bringing mixture to a boil and cooking for a few minutes, scraping the bottom. Then add previously cooked veggies, remaining 1/2 teaspoon salt, 1/4 teaspoon pepper and bay leaves. Stir, cover, bring to a boil, then reduce heat to low and simmer for 20 minutes.
Add quinoa, stir, cover and cook stew for another 15 minutes. Turn off heat and let it sit covered for 5 minutes.
Add peas and dill, gently stir and serve stew hot.
Notes
Store: Refrigerate in an airtight container for up to 5 days.
Freeze: Fully cook, cool completely and freeze in an airtight container for up to 3 months. Thaw in the fridge overnight.
Reheat: On a stovetop with a splash of broth or water, covered, on low heat.