Pour boiling water over the frozen peas to defrost, then drain.
Add most of the peas to a blender, saving a couple tablespoons for topping.
Add the garlic, lemon juice, tahini, salt, and a splash of water if needed. Blend until smooth.
Toss in the ice cubes and blend again.
Spread onto a plate and top with the reserved peas, toasted pumpkin seeds, parsley, and olive oil.
Serve with toasted seeded sourdough.
