Whisk together cooking sauce ingredients and set aside.
In a large skillet, heat oil over medium heat. Add the broccoli, toss to coat, and cook until slightlhy softened and bright green. Remove from the skillet and set aside.
Add the ground beef to the same skillet and cook over medium high heat, breaking it up as it cooks, until browned and cooked through. Remove accumulated grease or fat from the skillet, add the bell pepper, and saute for 1 minute.
Pour in the sauce mixture and bring to a boil. Simmer for 2 to 3 minutes. Meanwhile, combine the cornstarch and water in a lidded jar or whisk together. When the sauce is bubbling, slowly stir in the cornstarch slurry. Let it simmer until desired thickness.
Stir the broccoli into the skillet and heat through before serving with cooked rice. Garnish with green onions, red pepper flakes, and sesame seeds if desired.
Notes
Rice: Use your favorite rice and follow the package instructions. For, here is my favorite method to cooking light and fluffy white long grain rice: Rinse 2 cups of rice in cold water to remove added starch. Add to a saucepan, season with salt and pepper. Then add 2 1/2 cups of cold water to the pan and cover. Bring to a boil over high, then reduce to a simmer and cook for 8-10 minutes, not lifting the lid. Fluff with a fork before serving.
Ground Meat: While I'm using the classic ground beef, you can also substitute ground chicken or ground turkey.
Vegetables: It's easy to substitute vegetables for ones you have on hand, like cabbage, Swiss chard, bok choy, carrots, cauliflower, and more.
Frozen Broccoli: This is an easy substitution if you don't have fresh. It's best to thaw the broccoli, and then pat dry before proceeding with the recipe.