Forgive me for being a novice. I like having frozen spinach, onions, broccoli, and vegetables since they're convenient and don't spoil. But I only know the practices for cooking, and in particular, stir frying fresh vegetables. As a basic example, you heat up the oil, toss in the onions/garlic, then the leafy greens (with maybe some salt to reduce them), then the other veggies like broccoli.
How can I treat the frozen veggies such that they behave and cook like normal freshly chopped vegetables? One thing in particular is I like them getting seared by the hot oil.
The only method I have now is to microwave them for a bit (with perhaps a bit of water), and then to use them when they seem sufficiently unfrozen, but this usually leaves 30% of it frozen, 40% fine, and 30% vaporized by the microwave.
Any advice? Bonus points for speed, convenience, and simplicity (I'm a lazy college student who likes using pre-chopped vegetables and only one cooking vessel).