Into a medium-size bowl, add the frozen peas. Fill the bowl with cold water to cover the peas. Allow peas to soak for 20 minutes to thaw. Drain well.
Into a large skillet over medium heat, add the vegan butter. When the butter is melted, add the onion. Cook 3 minutes, stirring frequently until softened.
Add garlic and continue cooking an additional 1 minute.
Add peas, sea salt, and ground black pepper.
Stir and cook peas for 5 minutes to heat through.
Adjust seasoning to taste.
Serve hot.