Sweet Blueberry Onion Sauce - cooking recipe

Ingredients

1 large onion, chopped
1 kg frozen blueberries
1/2 cup sugar
1/2 cup butter

Preparation

Mix the onion and blueberries in a large saucepan over medium heat until it comes to a boil.
Add butter and sugar.
Let it simmer while stirring occasionally for at least a half hour, or until the entire mixture is soft and well blended.
OPTIONAL: add more butter to taste.
Serve it HOT with a pork/beef/bison roast that's thinly sliced.
Freeze the leftovers because you'll have enough left to have this tasty sauce for a few more meals.