Place a large soup pot or Dutch oven over medium-high heat and add 3 tablespoons olive oil — allow to heat until shimmering.
Add finely sliced leek and diced zucchini along with a generous pinch of salt and black pepper.
Cook for 3–4 minutes stirring frequently until vegetables begin to soften and wilt — leek should become translucent and zucchini should start to lose its raw firmness — do not rush this step as properly softened vegetables produce a silkier blended texture.
Add roughly chopped garlic to the softened vegetables and cook for exactly 1 minute stirring constantly — just long enough to soften garlic without browning or turning bitter.
Pour 4 cups vegetable broth and 1 cup water into the pot and bring to a boil.
Reduce to a steady simmer and cook for 6–8 minutes until zucchini is completely tender and easily pierced with a fork with no resistance.
Add frozen peas directly to the simmering pot — no thawing needed.
Add both large handfuls of baby spinach and stir through to wilt — approximately 1–2 minutes until spinach is fully wilted and peas are heated through.
Before blending use a slotted spoon to remove approximately 1 cup of the whole cooked vegetables from the soup and transfer to a small bowl — these are reserved for topping the finished bowls.
Add half of the cottage cheese to the soup remaining in the pot.
Using an immersion blender blend directly in the pot until completely smooth and thick — OR transfer in batches to a countertop blender blending each batch with some of the cottage cheese.
Blend very thoroughly until completely uniform and smooth with no visible cottage cheese curds remaining — the finished soup should be silky thick and vibrantly green.
Taste blended soup and adjust seasoning with additional salt and pepper as needed.
Ladle hot soup into serving bowls.
Spoon reserved whole vegetables into the center of each bowl.
Add a few spoonfuls of remaining cottage cheese dotted around the top of each bowl.
Drizzle extra virgin olive oil generously over each serving.
Zest the fresh lemon directly over each bowl immediately before serving — do not add zest during cooking as heat destroys the fresh aromatic quality.
Scatter fresh small mint leaves and basil leaves over the top immediately before serving — add at the very last moment as fresh herbs wilt quickly in hot soup.
Serve immediately while hot.