Step 1

Add the olive oil and butter to a saucepan over medium heat. Once the butter has melted and begins to foam, add the onions with a pinch of salt and cook over medium heat until onions have softened, 3-5 minutes.

Step 2

Add the garlic and herbs and cook until fragrant, about 1 minute.

Step 3

Add the crushed tomatoes. Bring to a simmer and let cook for 20-30 minutes, stirring occasionally until slightly reduced and thickened. Season to taste with salt and pepper.