In a small bowl, whisk together honey, garlic, soy sauce, lemon juice, and red pepper flakes.
If thickening, dissolve cornstarch in water and stir into the sauce. Set aside.
Heat 1 tablespoon olive oil in a large skillet over medium-high heat.
Add sliced sausage and cook until browned, about 3-4 minutes. Remove and set aside.
Add remaining olive oil to the skillet and sauté broccoli for 3-4 minutes until tender and bright green. Season with salt and pepper.
Add shrimp to the skillet with broccoli and cook 2-3 minutes per side until pink and opaque.
Return sausage to the skillet, pour the honey garlic sauce over all ingredients, and gently toss to coat.
Cook for 1-2 minutes until the sauce thickens and evenly coats the shrimp, sausage, and broccoli.
Remove from heat and garnish with sesame seeds and green onions if desired.
Serve hot over rice, noodles, or enjoy on its own.