Gather and prepare your ingredients.
Place the lentils into a bowl and cover with several inches of water. Set aside to soak for at least 1 hour, or up to overnight.
Drain the lentils and place into the bowl of a food processor. Blend until smooth.
Add the peas, onion, garlic, mint, lemon zest and process again until smooth.
Stir through the crumbled feta cheese.
Heat some olive oil in a frying pan over medium-high heat. Once sizzling, scoop the mixture in and use the back of a spoon to gently flatten. Cook for 3-4 minutes on each side. Repeat until you’ve used up all of the mixture.
