Heat the oil in a large skillet over high heat. Add the okra in a single layer and cook for 3 minutes without stirring.
Add in the onion and garlic then stir. Cook for 2 minutes or until lightly charred.
Stir in the tomato and red pepper and cook for 1 minute.
Remove from heat and stir in butter, thyme, lemon juice, and salt. Serve immediately.