Skillet Beef and Butternut Squash Hash with Rosemary and Onions

By AislePrompt Editorial · Published 2026-05-12 · Updated 2026-05-12

A hearty one-pan skillet hash featuring tender ground beef, sweet roasted butternut squash, and caramelized onions infused with fresh rosemary. This American-inspired Whole30 recipe (paleo), ready in about 40 minutes, pairs ground beef, butternut squash, yellow onion for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 450 calories and feeds 4, so it slots cleanly into a Whole30 week and pairs well with roasted sweet potato or a simple olive-oil salad. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Ingredients

• 1 lb (85% lean) ground beef
• 3 cups peeled and diced into 1/2-inch cubes butternut squash
• 1 large, diced yellow onion
• 1 tbsp, finely chopped fresh rosemary
• 3 cloves, minced garlic cloves
• 3 tbsp olive oil
• 1 tsp sea salt
• 1/2 tsp black pepper
• 1/4 tsp (optional) crushed red pepper flakes

The pan we’d use for this → Best Nonstick Cookware for 2026: Top 5 Skillet Picks + Buying Guide

Instructions

1. Step 1: Heat 2 tbsp olive oil in a large skillet over medium heat. Add 3 cups diced butternut squash and 1/2 tsp sea salt. Cook for 10-12 minutes, stirring occasionally, until squash is tender and edges begin to caramelize.
2. Step 2: Push squash to one side of the skillet and add 1 tbsp olive oil. Add 1 large diced yellow onion and 1 tbsp chopped fresh rosemary. Sauté for 5 minutes until onions are translucent and fragrant.
3. Step 3: Add 1 lb ground beef, 3 minced garlic cloves, 1/2 tsp sea salt, 1/2 tsp black pepper, and 1/4 tsp crushed red pepper flakes to the skillet. Break up the beef with a spatula and cook for 7-8 minutes until browned and cooked through.
4. Step 4: Stir all ingredients together and cook another 2 minutes to combine flavors. Serve hot.