Cauliflower Taco Bake

1
tbsp.

extra-virgin olive oil

1/2

yellow onion, diced

2
lb.

ground beef

Kosher salt

Freshly ground black pepper

2
tbsp.

keto taco seasoning mix

4

large eggs, lightly beaten

Kosher salt

1

small head cauliflower, cut into small florets

4
oz.

cream cheese

2/3
c.

heavy cream

2
tbsp.

butter

1/2
tsp.

ground mustard

1/4
tsp.

garlic powder

3
c.

shredded cheddar, divided

Kosher salt

1/4
c.

sliced green onions

1. Preheat oven to 350°. Make beef: In a large skillet over medium, heat oil. Add onion and cook until slightly softened, 2 minutes. Add ground beef and season with salt and pepper. Cook, breaking up meat with a wooden spoon, until no longer pink, 6 minutes. Drain excess fat and sprinkle in taco seasoning, stirring to coat meat. Remove from heat and let cool slightly. 
2. In a medium mixing bowl, whisk eggs, then stir in meat mixture. Spread mixture into an even layer in the bottom of a 9″-x-13″ baking dish. 
3. Meanwhile, make cauliflower: In a large pot of salted boiling water, blanch cauliflower, 3 minutes. Drain and squeeze water from cauliflower. Arrange cauliflower in an even layer on top of beef in baking dish.
4. Make cheese sauce: In a medium saucepan, combine cream cheese, heavy cream, butter, ground mustard, and garlic powder, and cook over medium, stirring constantly, until melted and smooth. Remove from heat and whisk in 2 cups cheddar until smooth. Season with salt and stir in green onions.
5. Pour cheese sauce over cauliflower in baking dish and top with remaining 1 cup cheddar. Bake until cauliflower is tender, beef is set, and cheese is melty, about 30 minutes. If desired, broil until golden, about 2 minutes.

Staub 40511-889 Ceramics Rectangular Baking Dish 13×9-inch Rustic Red