Fresh tomato and horseradish sauce

Ingredients

1/2 tbsp unsalted butter

1 small onion, peeled and thinly sliced

3/4 lbs diced ripe tomatoes

1 bay leaf

1/8 cup prepared horseradish

1 pinch coarse sea salt

1/2 tsp Herbs de Provence

Preparation

Melt butter in large skillet over medium-high heat. Add onions, stirring until they become translucent. Add tomatoes, bay leaf and horseradish. Stir, reduce heat to medium-low and cook until tomatoes are tender, about 20 minutes. Add salt, Herbs de Provence. Simmer for 5 more minutes. Cool and transfer to serving dishes or storage containers.