Keto Cheeseburger Casserol Too Good To Be True — Eat This Not That

Ingredients

• 1 Tbsp olive oil
• 3 lb ground beef
• 1 medium white onion
• chopped
• 1 tsp garlic powder
• 1 tsp onion powder
• 1 tsp kosher salt
• Freshly ground black pepper
• 1/4 cup tomato paste
• 1/4 cup Rao's Marinara Sauce
• 1 1/2 cups heavy cream
• 1 1/4 cup shredded Colby jack cheese
• 1/4 cup chopped chives