Caramelized Tomatoes - cooking recipe

Ingredients

6 large fresh tomatoes, skinned and cored
1/2 teaspoon salt
1/3 teaspoon black pepper
2 tablespoons butter, cut into small pieces
Sauce
2 stalks celery, diced
1/2 - 3/4 cup green bell pepper, diced
1/2 - 3/4 cup onion, diced
3/4 - 1 cup brown sugar (or to taste)
2 tablespoons all-purpose flour
1 teaspoon salt
1 tablespoon lemon juice
water, as needed

Preparation

Arrange tomatoes in a baking dish.
Season with salt and pepper, then dot with butter.
Bake at 375 F for 20 minutes.
Mix diced veggies with brown sugar and cook over low heat in a medium pan, stirring, for about 10 minutes.
Make a paste of flour, 1 tsp salt, lemon juice, and a small amount of water (enough to make a paste).
Stir into the veggie mixture and cook until thick and smooth.
Pour over baked tomatoes.