Soak quinoa in water for 2 hours.

Heat oil in a pan.

Add chopped garlic and saute.

Add chopped red and yellow bell peppers and saute.

Add cubed feta cheese and stir.

Add soaked quinoa and saute for 2 minutes.

Add 1.5 cups of water.

Cover and let the quinoa boil until cooked and water evaporates.

Check for seasoning and adjust salt and pepper as needed.

Let the quinoa mixture cool down.

Scoop out the pulp from tomatoes.

Season the inside of the tomatoes with salt and pepper.

Stuff the tomatoes with the quinoa mixture.

Top with grated cheddar cheese and chopped bell peppers.

Bake in a preheated oven at 150°C (300°F) for about 10 minutes.

Serve hot as part of breakfast, lunch or dinner.