Steam broccoli, potatoes, corn, carrot, and beans with a little salt.

Cook spaghetti according to package instructions.

Drain spaghetti and reserve 1/3 cup of the drained water.

Sauté chopped garlic and red chili flakes in olive oil until fragrant.

Add sliced onions and sauté until transparent.

Add the steamed vegetables and sauté for 2 minutes with a little salt.

Add capsicum, tomatoes, and half of the chopped basil. Sauté for 2-3 minutes.

Add the cooked spaghetti and mix well with the vegetables.

Add the reserved pasta water and simmer for 1-2 minutes.

Turn off the heat and squeeze in 1/2 tablespoon of lemon juice. Mix well and adjust salt if needed.

Garnish with basil, grated Parmesan cheese, and chili flakes before serving.