Step 1

Pour tomatoes in large bowl and crush into small pieces with hands.

Step 2

Preheat large skillet to medium heat, add olive oil and butter. Add onions and cook 3-5 minutes until translucent.

Step 3

Add garlic and cook about 30 seconds.

Step 4

Add tomatoes, basil, oregano, red pepper flakes, sugar, salt and pepper.

Step 5

Reduce heat to low and simmer for 30 minutes, stirring occasionally.